Smoking ban on planes must also be applied to flight crew

A COPILOT vaping on an Air China flight from Hong Kong to Dalian caused the plane to start a rapid emergency descent, because in trying to hide the fact that he was smoking by turning off a fan, he turned off the air-conditioning unit instead. His "foolish" error caused an oxygen shortage in the passenger cabin, triggering the height warning device and an emergency descent of the plane from an altitude of 11,000 meters to 4,000 meters. People's Daily comments:

History shows how risky it is to smoke onboard. The only good news this time is that the plane was able to land safely in Dalian, and there were no casualties. Despite this, there are many lessons to learn from the accident. Although air transportation technology and devices are more advanced nowadays, it is by no means a reason that people can take safety for granted.

No matter how advanced the technology is, it cannot eliminate human negligence.