Experts have pointed out unusual points when trying to explain the cause of the plane crash carrying 132 people in China.
Chinese media reported on March 21 that a Boeing 737 of China Eastern Airlines carrying 132 people crashed on a mountainside in Wuzhou City, Zhuang Autonomous Region, Guangxi Province, southern China. China. At the time of the crash, the plane was carrying 123 passengers and nine crew members.
Rescue teams were quickly deployed to the scene, but the victims are presumed dead. The airline also confirmed one person dead after what is believed to be the deadliest air disaster in China in decades.
According to SCMP, the video that is believed to capture the final moments of the Boeing 737 shows the plane almost plummeting to the ground in a vertical direction.
While China's civil aviation authority has begun an investigation into the plane crash, aviation safety experts have also studied the video and flight data for clues as to the possible cause. caused the accident.
"The first thing investigators have to determine is: was the plane intact before it hit the ground, or did some part of it fall off the plane before? The video data showed me, the plane was intact before it hit the ground. when it crashed," said Juan Browne, a Boeing 777 pilot and aviation incident analyst.
According to data from a website specializing in flight tracking, the Boeing 737 aircraft from Kunming to Guangzhou made a sudden descent before disappearing in the mountainous area of Guangxi. The flight data stopped updating from 2:22 p.m. on March 21 local time, when the plane had a cruising speed of about 696 km/h.
Data obtained by Flightradar24 shows that, more than an hour after takeoff, the plane suddenly plunged from an altitude of nearly 9,000 meters. Only about 2 minutes and 15 seconds later, the plane had dropped to more than 2,700 m. For the next 20 seconds, the final altitude recorded was nearly 1,000 meters, before the plane crashed into the mountainside.
According to expert Browne, it is "extremely rare" for an aircraft to plunge so nearly vertically. When examining the wreckage at the scene, investigators will especially focus on the plane's nose altitude control, Browne said.
Jean-Paul Troadec, former director of France's Bureau of Investigation and Analysis for Civil Aviation Safety, said the Boeing 737's flight path data was "very unusual", but it was still "too early" to give out. conclude.
Investigators have yet to release information on whether the plane's black boxes have been found. This is a heavily guarded device that records information such as aircraft activity, pilot maneuvers and cockpit sounds.
Investigators were also able to analyze video recorded from a security camera operated by a local mining company. Dashcam video from a car near the scene can also provide additional footage of the crash from a different angle.
The US Federal Aviation Administration said it was "ready to assist with investigative efforts if requested", while Boeing said it was working and ready to assist China Eastern Airlines.
The Sun news website quoted aviation expert Sally Gethin as saying that it is still too early to speculate on the possible cause of the crash, but some possible possibilities are problems with the rear of the engine. Flight, weather factors or a multitude of issues can affect an aircraft, such as a small fire on board or a wiring problem.
According to Gethin, the 132 people on board the plane may have faced the terrifying crash that lasted about two minutes. Because the pressure is so great that blood rushes to their brains, the pilot and passengers can lose consciousness.
However, flight data shows that, during the descent, about 10-20 seconds the pilot regains consciousness and tries to find a way to save the plane but fails.
Expert Gethin emphasized that so far, there has not been any evidence that there is a conspiracy behind the incident or that this is a deliberate accident. However, she said pilots could experience a "startle effect".
"Pilots have been trained a lot, but mostly in simulation programs. In real conditions, they can be stunned or disoriented in the face of unexpected situations. This is called the effect. startle response and it's very difficult to train pilots for that," Ms. Gethin said.
According to Ms. Gethin, even experienced pilots can "lose their guard" and that is when they can make wrong judgments, leading to accidents. The accidents usually happen when the plane is just taking off or about to land, unlike this case in China. As a result, the case became even more mysterious.
According to flight data, there is no information that the plane's pilot made contact with the ground before the crash. Wang Yanan, editor-in-chief of an aviation newspaper in Beijing, said the plane may have lost power while in flight coordinates, causing the pilot to lose control of the plane. This is a serious technical problem, if it happens, the plane will definitely fall down at high speed.
Sources in China said that there were 3 pilots on the plane that crashed, including 2 experienced and a trainee. The captain is said to have about 7,000 flight hours, the first officer has about 30,000 flight hours, while the apprentice pilot has only a few hundred hours. Expert Gethin also pointed out the anomaly when the co-pilot has more flight hours than the captain on the flight.
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