The Secret Language Of The Flight Crew
It’s not difficult to imagine scenarios where aircrews need to communicate something discreetly, without alarming the passengers. This is why flight attendants often use subtle codes to let each other know what’s going on.
Have you heard the occasional “ding” during a flight that doesn’t sound like someone calling an attendant? These often indicate things like turbulence, dangerous stages of flights, and can even indicate an emergency or alert the crew to an unauthorized person trying to enter the cockpit.