“By nature, passenger announcement systems on planes are hardwired, closed systems, making them incredibly difficult to hack.”
Passengers on A321s and 737s have heard moaning over the PA since July, and every known case routed through Los Angeles or Dallas-Fort Worth. American blames a faulty amplifier. Even Baio, after talking to avionics engineers, calls that explanation incomplete. When an airline’s explanation is one sentence long, nobody has actually found the cause.