# Accident 19930331007479A: Boeing 747121, Anchorage, AK, March 31, 1993

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: March 31, 1993, 12:34 local time
- Place: Anchorage, AK
- Airport: Anchorage International
- Damage: Substantial damage
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Operating rules: Air carrier (Part 121)
- Operator: JALA
- Location: 61.1592° N, 149.9903° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=61.1592&lon=-149.9903&mi=10
- Aircraft: N473EV, a cancelled registration (https://openairdocs.org/deregistered/N473EV-2011-07-01) (OpenAirDocs)
- Registry model: Boeing 747-121 (registry code 1384871, https://openairdocs.org/model/boeing-747-121) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT9D-3A (registry code 52050, https://openairdocs.org/engine/pratt-whitney-jt9d-3a) (OpenAirDocs)
- Reported make and model: BOEING 747121
- Reported engine: PWA JT9D7
- People aboard: 5
- Fatal injuries: 0
- Pilot flight hours: 10,000 total, 750 in this make and model
- NTSB investigation: [NTSB DCA93MA033](https://openairdocs.org/ntsb/DCA93MA033) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19930331007479A

## Narrative

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

ENGINE FELL OFF IN SEVERE TURBULENCE ON CLIMBOUT. PYLON FAILED DUE STRESS AND FATIGUE CRACK. WIND SHEAR REPORTED.

## 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 DCA93MA033](https://openairdocs.org/ntsb/DCA93MA033), Mar 31, 1993: Boeing 747-121 (N473EV), Anchorage, AK, substantial damage. Probable cause: THE LATERAL SEPARATION OF THE NO. 2 ENGINE PYLON DUE TO AN ENCOUNTER WITH SEVERE OR POSSIBLY EXTREME TURBULENCE THAT RESULTED IN DYNAMIC MULTI-AXIS LATERAL LOADINGS THAT EXCEEDED THE ULTIMATE LATERAL…

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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