Passengers and crew baffled by reoccurring screaming and yelling noises from an American Airlines PA system

 https://www.deseret.com/u-s-world/2022/9/28/23376951/american-airlines-intercom-noises

https://www.washingtonpost.com/travel/2022/09/26/flight-noise-american-airlines-intercom-lax/

Strange and mysterious noises aren't a new phenomenon on airplanes. It's very unsettling, nevertheless.

https://www.usatoday.com/story/travel/columnist/cox/2013/09/09/strange-sounds-airplanes-beeps-thumps/2777809

https://thedigitallabyrinth.blogspot.com/search?q=Ghoulish+moans+are+haunting+the+intercoms+of+American+Airlines+flights