# SDR AO1R200100002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2001
- Submitted: July 17, 2001
- Operation: General aviation
- Engine: Pwa JT9D*
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Compressor Wheel
- Part number: 500110801
- Part serial: M62358
- Condition: Fretted
- Location: Engine
- Part time: 31,003 hours, 10,225 cycles
- Stage of operation: IN
- How discovered: W
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AO1R200100002

## Discrepancy

EXCESSIVE FRETTING DAMAGE ON BLADE SLOT PRESSURE FACES BEYOND LIMITS IN ACCORDANCE WITH JT9D OHM P/N 646028 SECTION 72-35-04 REV 109 FRETTING CHECKS 0.0024". FRONT SNAP AND SHOULDER ARE OVERSIZE 0.002", REAR SNAP AND SHOULDER ARE OVERSIZE 0.002" AND OUT OF ROUND 0.004". REPAIR ORDER RECEIVED FROM P&W SMMO REQUESTED INSPECT TO THE LATEST REVISION OF E/M 646028 DIMENSIONAL INSPECT PART AND REPORT FINDINGS TO JEFF FISCUS. PART WAS RECEIVED IN OVERHAUL CONDITION.

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