11 Airplane Secrets Flight Attendants Don’t Tell

This device appeared on aircraft after an unsolved crime perpetrated by some Dan Cooper: he hijacked a passenger airplane, received a ransom, and escaped with a parachute. Since then, all Boeing and Airbus planes have been equipped with a Cooper vane: a device that doesn’t let the doors open mid-flight.

2. The black triangle

11 Airplane Secrets Flight Attendants Don’t Tell

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