EXPLAINER: What are the latest clues in China's plane crash?

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Xinhua

In this photo released by Xinhua News Agency, rescue workers search for the black boxes at a plane crash site in Tengxian county, southwestern China's Guangxi Zhuang Autonomous Region, Tuesday, March 22, 2022. A China Eastern flight 5735 carrying 123 passengers and nine crew members crashed outside the city of Wuzhou in the Guangxi region while flying from Kunming, the capital of the southwestern province of Yunnan, to Guangzhou, an industrial center not far from Hong Kong on China's southeastern coast. It ignited a fire big enough to be seen on NASA satellite images before firefighters could extinguished it. (Zhou Hua/Xinhua via AP)

WUZHOU – Add rain to the challenges facing Chinese investigators as they try to determine why a jetliner with 132 people aboard crashed in remote mountains.

Amid difficult conditions, officials said Wednesday they have recovered what they believe is the cockpit voice recorder, one of two “black boxes” carried by the China Eastern Airlines Boeing 737-800.

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The search was temporarily suspended due to a downpour.

The Boeing 737-800 was flying at 29,000 feet (8,800 meters) when it nosedived Monday into a gap in the mountains outside the southern city of Wuzhou.

WHAT HAVE RESCUERS FOUND?

The recorder, one of two “black boxes” aboard the plane, was found with damage to both its exterior casing and the recording unit inside. It will now be sent to Beijing for decoding and analysis, with the speed of that process depending on the amount of damage to the unit.

The cockpit recorder captures conversation in the cockpit and other sounds. The other records information about speed, altitude, direction up or down, pilot actions and performance of key systems. The search is now focused on the second box.

Rescuers with sniffer dogs and drones also found wallets, identity cards and debris.

Authorities gave no indication they found survivors.

Debris is scattered over a wide area that includes the other side of the mountain, state broadcaster CCTV said. The main crash area, now a barren pit in the forested mountainside, is about half the size of a football field.

Searchers must climb steep inclines in the area, which is surrounded on three sides by mountains and reached by a dirt road.

WHAT ARE INVESTIGATORS SAYING?

Investigators have declined to discuss possible reasons for the crash.

Damage to the aircraft was severe, which makes the investigation “very difficult," said Zhu Tao, director of CAAC's Office of Aviation Safety.

“We cannot have a clear assessment of the cause of the accident with the information currently available,” Zhu said Tuesday at a news conference.

Authorities are “carrying out in-depth investigation” of the aircraft’s design and maintenance, air traffic control, weather and other issues, he said.

WHAT IS KNOWN ABOUT THE PLANE?

The 6 1/2-year-old plane’s “technical condition was stable” and met requirements to fly, said Sun Shiying, the chairman of the Yunnan provincial branch of China Eastern Airlines.

The plane was flying from Kunming, the capital of Yunnan province in the southwest, to Guangzhou in the southeast.

The 737-800 has an excellent safety record, said Hassan Shahidi, president of the Flight Safety Foundation. It is from an earlier generation of the 737 series than the Boeing 737 Max jets, which were grounded after crashes in 2018 and 2019. The 737-800 does not have the flight control software that was blamed for the 737 Max crashes.

HOW HAS THE CHINESE GOVERNMENT RESPONDED?

The central government sent a team led by Vice Premier Liu He and a senior Cabinet official, State Councilor Wang Yong, to the site to “guide rescue work” and the investigation of the crash.


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