N772SW, the aircraft involved, photographed in 2016.
Accident
Date
April 17, 2018
Summary
Engine failure leading to rapid depressurization
Site
Over Pennsylvania[1]
Aircraft
Aircraft type
Boeing 737-7H4
Operator
Southwest Airlines
IATA flight No.
WN1380
ICAO flight No.
SWA1380
Call sign
SOUTHWEST 1380
Registration
N772SW
Flight origin
LaGuardia Airport, New York City, New York, United States
Destination
Dallas Love Field, Dallas, Texas, United States
Occupants
149
Passengers
144
Crew
5
Fatalities
1
Injuries
8
Survivors
148
50km 30miles
LaGuardia Airport
Emergency landing
Debris recovered
Southwest Airlines Flight 1380 was a Boeing 737-700 that experienced a contained engine failure[a] in the left CFM International CFM56 engine after departing from New York–LaGuardia Airport en route to Dallas Love Field on April 17, 2018. The engine cowl was broken in the failure, and cowl fragments damaged the fuselage, shattering a cabin window and causing explosive depressurization of the aircraft. Other fragments caused damage to the wing. The crew carried out an emergency descent and diverted to Philadelphia International Airport. One passenger was partially ejected from the aircraft and sustained fatal injuries, while eight other passengers sustained minor injuries. The aircraft was substantially damaged.[2][3][4]
This accident was very similar to an accident suffered 20 months earlier by Southwest Airlines Flight 3472 flying the same aircraft type with the same engine type. After that earlier accident, the engine manufacturer, CFM, issued a service directive calling for ultrasonic inspections of the turbine fan blades with certain serial numbers, service cycles, or service time. Southwest did not perform the inspection on the engine involved in this failure because it was not within the parameters specified by the directive.[2]
^Cite error: The named reference bern was invoked but never defined (see the help page).
^ abc"Left Engine Failure and Subsequent Depressurization, Southwest Airlines Flight 1380, Boeing 737-7H4, N772SW, Philadelphia, Pennsylvania, April 17, 2018" (PDF). National Transportation Safety Board. November 19, 2019. NTSB/AAR-19/03. Retrieved December 12, 2019.
^"5/3/2018 Investigative Update Accident No: DCA18MA142". ntsb.gov. National Transportation Safety Board. DCA18MA142. Archived from the original on May 6, 2018. Retrieved May 3, 2018. This article incorporates text from this source, which is in the public domain.
^"Public meeting: Left Engine Failure and Subsequent Depressurization Southwest Airlines Flight 1380, Boeing 737-7H4". NTSB.gov. National Transportation Safety Board. Retrieved June 17, 2020.
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