What was found
WHEN TAKEOFF THRUST WAS SET HEARD LOUD BANG FROM RIGHT SIDE OF AIRCRAFT. SMOKE SEEN IN NR 4 ENGINE. FIRED BOTH BOTTLES TO ENGINE. *S/D* HIGH COMPRESSOR STG 5 BLADE FAILURE, NO EVIDENCE OF FIRE. REPLACED ENGINE.
- Difficulty date
- May 30, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N171UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24322
- Engine
- Pwa PW4056
- System (JASC)
- 7230 · Turbine Engine Compressor Section
- Part
- Compressor
- Part number
- 55H005
- Condition
- Failed
- Location
- Nr 4 Engine
- Stage of operation
- TO
- Nature of condition
- B, J
- Precautionary procedure
- C, D, F
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.