What was found
NR 4 ENGINE FAILURE SHORTLY AFTER TAKEOFF. DUMPED FUEL AND RETURNED TO FIELD. REPLACED ENGINE. ANGLE GEARBOX AB-1 BEARING FAILURE.
- Difficulty date
- January 17, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N183UA
- Make and model
- Boeing 747422
- Aircraft serial
- 25379
- Engine
- Pwa PW4056
- System (JASC)
- 7200 · Engine (Turbine/Turboprop)
- Part
- Bearing
- Part number
- 50G631
- Condition
- Failed
- Location
- Nr 4 Engine
- Stage of operation
- CL
- Nature of condition
- Y
- Precautionary procedure
- E, J, A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.