Air China 1 Flight plummeted 1000 meters. Is anyone injured?

On the morning of August 9, 2020, a passenger plane ZH-9209, which took off from Shenzhen, suddenly appeared abnormal pressurization when it rose to 9200m in Guangzhou. The crew descended to a safe height according to the procedure, and finally returned to Shenzhen and landed safely at Shenzhen Baoan International Airport. Then change the passenger plane to continue the mission. This matter has also caused a lot of repercussions in the society, and people from all walks of life are discussing it hotly. It is reported that according to the notification, it is a pressurization failure, so assuming that both sets of pressurization systems of the aircraft are faulty, the aircraft will slowly release the pressure. If the crew does nothing at this time, the height of the cabin will rise to nearly 9200 meters during this flight, and the oxygen mask inside the aircraft will pop up. Therefore, measures must be taken to lower the plane below 3000 meters to ensure that people on the plane will not be deprived of oxygen, because the oxygen supply time of passengers on the plane can only be maintained for about 12 minutes.

The rapid descent of the plane will make the passengers on board slightly shake, just like riding a children's roller coaster. In addition, the oxygen mask of this flight did not pop up, indicating that there was no emergency pressure relief in the cabin. It can also be seen from the official announcement that the plane was safe after landing, and all the passengers changed to other passenger planes to continue their journey, and no one was injured during the whole journey.

Well-known aviation bloggers also said that these are just ordinary operations. In order to avoid hypoxia in the cabin, the descending speed of one kilometer per minute is within a reasonable range. Because if people are deprived of oxygen for more than three minutes, irreversible damage will occur. Therefore, the plane should land at a suitable altitude as soon as possible to ensure that the oxygen content in the cabin is sufficient.

According to experts, this kind of event happens all over the world every year. Moreover, the pilot door industry will accept all kinds of drills to deal with emergencies, so we should believe in the professionalism of the crew. Only by keeping calm can we respond to the emergency safely.