Pilots are encouraged to speak as little as possible to passengers because speaking too much can inadvertently reveal information that scares many people.
Reasons why pilots speak minimally on airplanes
Patrick Smith, a pilot and author of the book Cockpit Confidential, has explained why pilots often speak very little when on airplanes. It's not because they are cold or arrogant, but in fact, pilots are trained very little in customer service.
They are often encouraged to say nothing or very little. Airlines fear that if pilots speak more, the information they communicate to passengers may cause many people to worry unnecessarily.

This is also similar with flight attendants. With their years of flying experience, male pilots said passengers would not be informed by flight attendants of every issue, minor incidents that may occur throughout the flight. These unannounced issues are things that do not affect flight safety.
Smith suggests passengers don't need to know everything happening as it may cause panic. However, in case of a major incident, all passengers will be informed. Flight attendants will announce over the PA system and provide thorough instructions.

He also advises passengers to stay calm during emergencies, as everything is under control and has been well-trained by the flight crew beforehand. “When they alert you to an emergency situation, don't panic and treat it as a life-or-death flight.
The most meaningless thing passengers do when boarding airplanes is staring into the eyes of flight attendants. This action cannot help you gauge what the flight attendants are thinking or whether they are hiding any ongoing incidents from you. It only makes them more confused, according to Smith.
Source: Anh Minh/Vnexpress
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Reference: Travel Handbook by Mytour
MytourSeptember 8, 2020