【The Epoch Times, March 23, 2022】(Comprehensive report by Epoch Times reporter Li Linqing)Eastern Airlinesone737The airliner is approaching on Monday (21st)thirty thousand feetthe altitude of cruising flight suddenlyvertical fall, the crash performance is unprecedented. A number of experts analyzed the cause of the flight’s cliff-like fall and tried to solve the mystery;Air swarm pilots are conspiracy theorists, or wait for the black box to clear the fog.
Chinese state media reported that China Eastern AirlinesMU5735At the crash site, rescuers found larger fragments of the wing and the remains of the victims, but no survivors.Search and rescue is still ongoing, and the cause of the crash remains to be determined.
Eastern AirlinesMU5735The flight suddenly fell vertically at a cruising altitude of nearly 30,000 feet at a speed of about an hour845km, approx.2Minutes disappeared from radar and lost contact with the ground. Expert analysis is divided.
The Federal Aviation Administration (FEW) former chief Daniel·Avery (Daniel Elwell) told Archyde.com: Accidents at cruising altitudes are usually caused by weather, vandalism or pilot error, but mechanical failures at cruising altitudes in modern commercial jets are very rare.
British Airways Analyst Philip·Butterworth–Hayes and Aerospace Analyst Alex·Macross is acceptingBBCDuring the interview, the possibility of weather and bird strikes was ruled out because2.9The 10,000-foot cruise altitude was “well above the bird strike zone” and “the weather was fine.”
The British “Sun” quoted analyst Gesing as saying that plane crashes generally occurred during take-off and landing, andMU5735The crash occurred during the cruise phase, and it fell vertically, making the reason behind the crash even more mysterious.
So what exactlyMU5735What was the cause of the flight crash? In summary, there are several possibilities.
Pilots can’t control aircraft human factors?
MU5735After the plane crashed,“Aeronautical Knowledge” of China Aeronautical SocietyIn an interview with The Paper, Wang Yanan, the editor-in-chief of the magazine, believed that according to the video and data information, “the pilot has no way to control the control surface of the aircraft, and the pilot’s maneuvering actions cannot change the attitude of the aircraft.”
However, an expert in the mainland who goes by the pseudonym Chen Shi today (22Japan) told The Epoch Times, “The plane lost control, and it shouldn’t have plummeted. There should be more human factors here.” He gave no specific explanation for the “human factor”.
On the same day, “Taiwan TV News” quoted experts who also believed that even if all the engines of the aircraft failed, the aircraft would gradually descend after a period of level flight, and it is unlikely that a straight fall like this is possible.
A well-known aviation bloggerFATIIIIn the same view, a vertical descent means that the aircraft should be in a dive. Even if both engines fail, the aircraft’s attitude will not dive, but continue to glide forward, “just like a car suddenly loses power, the car will continue to glide.”
Mechanical failure caused the plane to fall vertically?
Ke Yubao, director of the Chinese Aircraft Owners and Pilots Association, believes that from a technical point of view, the aircraft suddenly drops to such a large height in a short period of time during the cruise phase, which is more likely to be a mechanical failure. There was a problem with the horizontal stabilizer.”
However, Wang Yanan analyzed that the icing of the aircraft will cause the aircraft to change shape, especially the shape of the wings, thus losing the function of generating lift, resulting in “the aircraft entering a deep stall”, so the aircraft falls quickly.
However, he stressed, “at the aircraft’s normal cruising altitude8000When it is more than a meter, the possibility of freezing is extremely small. “Even in3000When flying at an altitude of meters or lower, the aircraft will be icing. Modern aircraft often have relatively complete deicing equipment, which can prevent the aircraft from severely icing.
In an interview with Free Asia, Yao Cheng, a former staff officer of the Chinese Navy Command currently living in the United States, pointed out that according to the analysis of the picture of the plane rushing directly to the ground, the plane was not in a stall state.
Yao Cheng said that if there is a mechanical accident, it is impossible to go straight to the ground, because “US military aircraft have anti-collision systems. When the plane dives to a certain extent, the anti-collision system will automatically pull up the nose”, even in autopilot. If there is a problem with the state or automatic operation, it will not cause the nose to plunge down and hit the ground.
Chen Shi also said, “The mechanical failure that caused the vertical fall may also be that the joystick was suddenly stuck, and it was stuck in the straight-down position, which is too coincidental!”
Structural issues? The pilot was in a coma and pressed the control stick?
an appointment3000Former civil aviation pilot with hours of flying experienceBBCSay, if the plane suddenly has some structural problem, the cabin is depressurized, causing the pilot to pass out, depress the control stick (yoke), “it is possible for the plane to fly vertically downward.”
Chen Shi said that the “structural problem” basically means “the cabin is damaged, there is air leakage, and the pressure is gone”. In this case, the person will fall into a coma, and after falling into a coma, the body leans forward and “just presses on the control stick, so the plane plummets.” However, there are two things that don’t make sense here.
On the one hand, at that level of sky, there are no birds and it is not easy to hit a hole. Of course, there is a problem with the cabin, but it will not lose life immediately, so there should be time to call for help. But,MU5735No distress signal was issued;
On the other hand, even a comatose pilot pressing right on the stick is unlikely to drop the plane vertically to the ground.
Yao Cheng believes that the crash process of China Eastern Airlines is suspicious.
The only possibility for the plane to fall vertically is…
Chen Shi and Yao Cheng’s analysis appeared to be confirmed in another report by Free Asia recently. The report said that the pilots of the air group pointed out that because of the aerodynamic effect of the wings, there was only one possibility for the plane to maintain a vertical attitude towards the ground: to use some external force to lock the rudder firmly at a certain angle.
Taiwan TV News also reported that screenshots of the suspected accident flight on the Internet showed that the vertical tail of the crashed plane seemed to be incomplete!
Some experts believe that this is likely to be the key to the crash. They suspect that the tail may have been damaged or improperly maintained, resulting in disintegration in the air, the failure of the hydraulic system, and the inability of the pilot to control the direction and pitch angle, so the plane fell straight.
Many doubts waiting for the black box or solving doubts?
Chinese rescuers are looking for“black box”。American civil aviation industry analysis companyR.W. Mann & Co.Chairman Robert·Man(Robert Mann) told Archyde.com that only when investigators obtained“black box”Only when the data inside can analyze why the plane plummeted.
Yao Cheng pointed out, “General planes have three sets of procedures. If there is a problem with one set of procedures, it will be automatically transferred to another set of procedures, and it can also be transferred to manual operation.” Moreover, civil aviation aircraft have a pilot and a co-pilot, as well as a navigator and a flight attendant. mechanic. Therefore, only by releasing the “black box” flight recorder can the cause of the plane crash be finally determined.
Yao Cheng emphasized that if it was a mechanical failure, the authorities would later release “the flight recorder of the black box. If the recording of the conversation between the pilot and the ground before the crash is not released, it will indicate another reason for the crash.”
Responsible editor: Sun Yun#