The Daily Mail... wow, I'm shaking my head at the quality of journalism these days. So, according to the story, it sounds like the pilot mistakenly broadcast a transmission intended for ATC to the passenger cabin via the P.A.? Anyway, I don't know what engine type are used on Southwests fleet, CFM56 or Leap? Interesting though, this issue of the fan cowl departing the aircraft has only ususally been experienced by the A320 family aircraft, I was surprised to see it on a 737.