United Airlines pilots called in a bomb threat when they heard a mysterious beeping on the plane

United Airlines Flight 2092 from Chicago to New York diverted to Pittsburgh, where passengers were evacuated and bomb squads swept the plane.
Travel + Leisure on MSN

Those beeps you hear on a flight actually mean something—here’s what airplane chimes signal

A pilot weighs in on what one, two, and three chimes mean on a plane.
CNN

Plane cleared after ‘beeping noise’ reported on Frontier Airlines flight that landed at Dulles

A plane that was isolated on the taxiway and searched at Washington Dulles International Airport after a beeping sound was heard coming from the cargo hold has been cleared by police, according to a ...