The surveillance video captured the moment when the China Eastern Airlines passenger plane fell "with its nose falling straight down". How to interpret it from a professional perspective?

From a professional perspective, this falling method is called a "death dive" in an air crash. This situation is basically caused by the engine losing power, causing the aircraft to have no lift, and then plummeting; it may also be because there is a problem with the aircraft's flight system, causing problems with power distribution, and ultimately causing the aircraft to undergo a "death dive". .

The following contents are personal opinions and are for reference only! Everything is subject to the official announcement!

This kind of "death dive" air crash is rare in the history of aviation. Because every aircraft will be inspected before taking off, the probability of this happening is very small. Of course, this kind of thing has not happened before. So the reason why the China Eastern Airlines passenger plane crashed this time may also be because of this. Moreover, a severe convective air warning was issued four hours ago where the crash occurred. If the aircraft engine really loses power, it is normal for such a "death dive" to occur under conditions such as strong convection that are extremely unfavorable for flying. However, whether this was the cause of the China Eastern Airlines plane crash will not be known until the authorities find the plane's "black box".

In the past few years, similar air crashes have occurred in Indonesia. Interestingly, the aircraft model that happened to crash was also a Boeing 737-800. During the subsequent investigation, Indonesian officials learned that the cause of the air crash was a problem with the altimeter on the aircraft, which caused the aircraft's flight system to misjudge. As a result, the flight system reduced the power of the aircraft's engine, resulting in insufficient power for the aircraft. It was a direct death dive. The pilot also tried to intervene, but because the authority of the aircraft flight system was higher than the authority of human operation, it was of no avail. Of course, this does not prove that this is the cause of the air crash, it just provides an example for reference.

In general, from a professional point of view, what can cause the aircraft to plummet nose down means that there is a problem with the power system of the aircraft, otherwise it would not have plummeted.