SDR DL764021396

Service difficulty report · Compressor · Boeing 767432ER

Difficulty date: December 1, 2002
Submitted: December 17, 2002
Operation: Air carrier
Aircraft: N827MH
Make and model: Boeing 767432ER
Aircraft serial: 29698
Aircraft time: 6,218 hours, 2,419 cycles
Engine: Ge CF680
Engine time: 6,218 hours, 2,419 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Compressor
Condition: Damaged
Location: Nr 1 Engine
Part time: 6,218 hours, 2,419 cycles
Stage of operation: DE
How discovered: O
Nature of condition: E
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

INBOUND REPORT OF HI N2 VIBS AT TOD. 4.1 UNITS WHEN POWER REDUCED DURING FLIGHT LEVEL CHANGE. ATL MTC OBSERVED 2.0 UNITS DURING PWR RUN. CHECKED MCD/S AND AVM FOR FAULTS / ALL OK. REPLACED ACCELEROMETER WITH SAME RESULTS ON ENGINE RUN. HPC BORESCOPE REVEALED 5TH AND 12TH STG HPC DAMAGE. ENGINE CHANGE IN WORK.