# SDR DL764021396

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2002
- Submitted: December 17, 2002
- Operation: Air carrier
- Aircraft: [N827MH](https://openairdocs.org/aircraft/N827MH), registered now
- 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](https://openairdocs.org/jasc/7230)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL764021396

## Discrepancy

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.

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