# Accident 20110401007039A: Boeing 737-3H4, Yuma, AZ, April 1, 2011

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 1, 2011, 15:57 local time
- Place: Yuma, AZ
- Airport: Yuma International
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: Air carrier (Part 121)
- Operator: SWAA
- Location: 32.6567° N, 114.6058° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=32.6567&lon=-114.6058&mi=10
- Aircraft: N632SW (not matched to a registry record)
- Reported make and model: BOEING 737-3H4
- Reported engine: CFM INTL. CFM56 SERIES
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Airline transport, flight instructor
- Pilot flight hours: 14,330 in this make and model, 109 in the last 90 days
- NTSB investigation: [NTSB DCA11MA039](https://openairdocs.org/ntsb/DCA11MA039) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20110401007039A

## Narrative

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

ON APRIL 1, 2011, AT ABOUT 1557 MOUNTAIN STANDARD TIME (MST), SOUTHWEST AIRLINES FLIGHT 812, A BOEING 737-300, REGISTRATION N632SW, EXPERIENCED RAPID DEPRESSURIZATION AT APPROXIMATELY 34,000 FEET. THE FLIGHT CREW CONDUCTED AN EMERGENCY DESCENT AND DIVERTED TO YUMA, ARIZONA. UPON LANDING, A 5-FOOT X 1-FOOT HOLE IN THE CROWN AREA WAS OBSERVED ON THE LEFT SIDE OF THE AIRPLANE, AFT OF THE OVER-WING EXIT AT THE STRINGER 4L LAP JOINT. OF THE 117 PASSENGERS AND 5 CREW MEMBERS ONBOARD, ONE FLIGHT ATTENDANT RECEIVED A MINOR INJURY. THE FLIGHT WAS BEING CONDUCTED UNDER 14 CODE OF FEDERAL REGULATIONS PART 121 AS A REGULARLY SCHEDULED PASSENGER FLIGHT BETWEEN PHOENIX SKY HARBOR INTERNATIONAL AIRPORT, PHOENIX, ARIZONA AND SACRAMENTO INTERNATIONAL AIRPORT, SACRAMENTO, CALIFORNIA.

## 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 DCA11MA039](https://openairdocs.org/ntsb/DCA11MA039), Apr 1, 2011: Boeing 737 (N632SW), Yuma, AZ, substantial damage. Probable cause: the improper installation of the fuselage crown skin panel at the S-4L lap joint during the manufacturing process, which resulted in multiple site damage fatigue cracking and eventual failure of the…

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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