# Accident 20180417024829A: Boeing 737-7H4, Philidephia, PA, April 17, 2018

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 17, 2018, 11:00 local time
- Place: Philidephia, PA
- Airport: Philadelphia International
- Damage: Substantial damage
- Phase of flight: Other, Specify
- Operating rules: Air carrier (Part 121)
- Operator: SWAA
- Location: 39.8719° N, 75.2400° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=39.8719&lon=-75.2400&mi=10
- Aircraft: N772SW, a cancelled registration (https://openairdocs.org/deregistered/N772SW-2024-10-28) (OpenAirDocs)
- Registry model: Boeing 737-7H4 (registry code 1384404, https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Registry engine: CFM International CFM56 series (registry code 13802, https://openairdocs.org/engine/cfm-international-cfm56-series) (OpenAirDocs)
- Reported make and model: BOEING 737-7H4
- Reported engine: CFM INTL. CFM56 SERIES
- People aboard: 150
- Fatal injuries: 1
- Other injuries: 8
- NTSB investigation: [NTSB DCA18MA142](https://openairdocs.org/ntsb/DCA18MA142) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20180417024829A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON APRIL 17, 2018, AT 1103 EASTERN DAYLIGHT TIME, SOUTHWEST AIRLINES FLIGHT 1380, A BOEING 737-700, N772SW, EXPERIENCED A FAILURE OF THE LEFT, CFM INTERNATIONAL MODEL CFM-56-7B ENGINE AND LOSS OF ENGINE INLET AND COWLING DURING CLIMB AT ABOUT FLIGHT LEVEL 320.  FRAGMENTS FROM THE ENGINE INLET AND COWLING STRUCK THE WING AND FUSELAGE, RESULTING IN A DEPRESSURIZATION DUE TO THE DEPARTURE OF ONE PASSENGER WINDOW. THE FLIGHT CREW CONDUCTED AN EMERGENCY DESCENT AND DIVERTED INTO PHILADELPHIA INTERNATIONAL AIRPORT (KPHL), PHILADELPHIA, PA. OF THE 144 PASSENGERS AND FIVE CREWMEMBERS ONBOARD, ONE PASSENGER RECEIVED FATAL INJURIES AND EIGHT PASSENGERS RECEIVED MINOR INJURIES. THE AIRPLANE SUSTAINED SUBSTANTIAL DAMAGE.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DCA18MA142](https://openairdocs.org/ntsb/DCA18MA142), Apr 17, 2018: Boeing 737 7H4 (N772SW), Philadelphia, PA, substantial damage, 1 fatal. Probable cause: 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…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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