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Muddy conditions hamper search for China Eastern wreckage

In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers look on as an excavator digs into the earth at the crash site of the China Eastern 737-800 flight in Tengxian County, southern China's Guangxi Zhuang Autonomous Region on Saturday, March 26, 2022. Construction excavators dug into a crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers conduct search and rescue work at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers identify objects collected at the core site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Lu Boan/Xinhua via AP) In this photo released by Xinhua News Agency, rescuers carry a piece of plane wreckage at the site of Monday's plane crash in Tengxian County, southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Construction excavators dug into the crash site Saturday in the search for wreckage, remains and the second black box from a China Eastern 737-800 that nosedived into a mountainside in southern China this week with 132 people on board. (Zhou Hua/Xinhua via AP) Passengers wait for their flight as a China Eastern flight takes off from the runway of Baiyun Airport on Friday, March 25, 2022, in southern China's Guangzhou province. China Eastern, one of China's four major airlines, said Thursday the Shanghai-based carrier and its subsidiaries have grounded a total of 223 Boeing 737-800 aircraft while they investigate possible safety hazards after the crash of its flight MU5735 on Monday. (AP Photo/Ng Han Guan) In this image taken from video footage run by China's CCTV, search and rescue workers wearing protective suits and heavy machinery conduct continued search operations at the China Eastern flight crash site in Tengxian County in southern China's Guangxi Zhuang Autonomous Region, Friday, March 25, 2022. Five days after the crash of a passenger jet in mountainous southern China, the disaster's cause remains a mystery while the search for the plane's second "black box" continued Friday. (CCTV via AP Video)