4hw.com.cn: on the evening of July 10, on the way from Hong Kong to Dalian, Air China flight ca106 made an emergency descent of more than 7000 meters in ten minutes, resulting in the fall of the oxygen mask in the cabin, and finally arrived at the destination one hour later. A netizen revealed that the crew mistakenly turned off the two components as recirculation fans due to smoking on the way, which led to cabin pressure relief.
On the 13th, the Civil Aviation Administration released the preliminary investigation reasons: the co pilot tried to turn off the circulating fan due to smoking electronic smoke, but he mistakenly turned off the adjacent air conditioning components to prevent the smoke smell from spreading to the cabin, resulting in the lack of oxygen in the cabin and the cabin altitude alarm. The crew handled the emergency pressure relief procedure and released the oxygen mask in the cabin. After falling to 3000m, the unit found that the problem was not correct and restored the air conditioning unit. On the same day, Air China said it would seriously learn a profound lesson from the crew involved in the flight and terminate the labor contract in accordance with the law.
Although more than 100 passengers are safe and sound, there are still many questions left in this emergency: is there no cross check and mutual recognition when the key equipment is shut down? Why don't the emergency mask in the cabin fall off and the crew announce the Mayday (radio call sign), instead of landing nearby for check, why do they continue to sail higher? & hellip; & hellip; this needs to be explained as soon as possible by relevant parties.
It has to be said that the "cloud shock" is too strange: the safety and reliability of the aircraft far exceeds that of other means of transportation, and the SMS (safety management system) supporting the flight transportation is also extremely comprehensive. Technology and system guarantee make our aviation flight have already entered the era of super safety.
As a highly qualified aviation professional, the pilot should strictly abide by the safety laws and regulations. Compared with those passengers who lack professional knowledge or training who smoke in the cabin, the copilot is even more surprised to know the law and violate the law, and then think about it in detail -- civil aviation safety regulations and related systems are valuable experiences that have paid countless lives. Under the background that the aircraft is a highly enclosed space and the air crash mortality is very high, a little deviation may lead to severe consequences, not to mention reckless Not professional misoperation after violation?
From this point of view, although there is a perfect safety management system, how to ensure consistent and strict compliance is still a problem.
According to civil aviation safety management regulations, safety management system or equivalent safety management mechanism shall have at least multiple functions, including identifying hazard sources and assessing relevant risks, formulating and implementing necessary preventive and corrective measures to maintain acceptable safety performance level, and continuously monitoring and regularly evaluating the suitability and effectiveness of safety management activities.
In this event, none of the three basic functions were implemented properly. It is not the lack of regulations, but the lack of strict compliance with regulations and the lack of effective payment.
For example, some pilots in the cockpit may have an addiction. If the safety management system is effective, they should be aware of this degree of addiction in advance and take measures such as withdrawal and temporary flight suspension. If the pilot is not too addicted to smoking but has a weak sense of safety, he should be corrected in time. Unfortunately, in front of the public is illegal smoking, misoperation, internal control failure and many other chaos, which eventually led to a thrilling scene.
It should be noted that Air China, the flag carrier, is the one with the highest level of safety assurance among domestic airlines. This also makes it difficult for the public to dispel concerns about aviation safety despite its official claim of 'zero tolerance'.
In view of this, it is necessary to form a compatible design between people and safety system on the basis of the existing safety management system as soon as possible, so that civil aviation practitioners not only follow passively, but also have the awe of life, respect for the system and dedication to safety from the bottom of their hearts, and can be aware and alert when the safety performance declines.
In 2017, China's civil aviation passenger transportation volume has reached 550 million people, and the huge scale needs more strict and reliable security. Summer is the peak season for travel, with more concentrated people and more complex climate conditions. I hope that all airlines can take this as a reference, and avoid repeating this kind of 'cloud shock' through more careful constraint and internal control mechanism.