Southwest Airlines on Saturday cancelled 300 flights after one of its Boeing 737-300s suffered a depressurisation event triggered by a hole discovered in the top of the aircraft after it diverted and landed in Yuma, Arizona.
The aircraft, WN812, was enroute on a scheduled flight from Phoenix, Arizona to Sacramento, California.
Southwest states it is working with Boeing and regulators to examine 79 aircraft – not 81 as previously reported. The aircraft are being inspected in accordance with airworthiness directives for skin fatigue over the course of the next several days at five locations.
“After the plane landed safely in Yuma, the crew confirmed a hole in the top of the aircraft, approximately mid-cabin,” Southwest states. “"We are working closely with Boeing to conduct these proactive inspections and support the investigation.”