Date: April 17, 2018
Time: 1004
Location: NW of Philadelphia, Pennsylvania
Operator: Southwest Airlines
Flight #: 1380
Route: New York - Dallas
AC Type: Boeing 737-7H4
Registration: N722SW
cn / ln: 27880/601
Aboard: 149   (passengers:144  crew:5)
Fatalities: 1   (passengers:1  crew:0)
Ground: 0
Summary: While climbing to FL320, the No. 1 engine suffered an uncontained catastrophic failure. Shrapnel struck and broke a window which resulted in explosive decompression. A woman passenger sitting in the window seat was partially sucked out of the window. Passengers were able to pull her back in the cabin but she was reported in cardiac arrest and soon after died. The crew declared an emergency and landed safely at Philadelphia airport. The accident was caused by a low cycle fatigue crack in the dovetail of fan blade No.13, which resulted in the fan blade separating in flight and impacting the engine fan case at a location that was critical to the structural integrity and performance of the fan cowl structure. This impact led to the in-flight separation of fan cowl components, including the inboard fan cowl aft latch keeper, which struck the fuselage near a cabin window and caused the window to depart from the airplane, the cabin to rapidly depressurize, and the passenger fatality.

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