Waxy has a good roundup of anecdotes and theories regarding the spooky moans and groans heard recently on American Airlines flights.
The weirdest flight ever.
These sounds started over the intercom before takeoff and continued throughout the flight.
They couldn’t stop it, and after landing still had no idea what it was. pic.twitter.com/F8lJlZHJ63— Emerson Collins (@ActuallyEmerson) September 23, 2022