# SDR 2004UALA00632

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 1, 2004
- Submitted: July 6, 2004
- Operation: Air carrier
- Aircraft: [N660UA](https://openairdocs.org/aircraft/N660UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27115
- Aircraft time: 49,456 hours, 8,092 cycles
- Engine: Pwa PW4060
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Blades
- Condition: Damaged
- Location: Rt Compressor
- Stage of operation: CL
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004UALA00632

## Discrepancy

COMPRESSOR STALL AT ROTATION ON RIGHT ENGINE.  RETURN TO FIELD.  BOROSCOPE OF ENGINE FOUND COMPRESSOR BLADE DAMAGE AND ENGINE WAS REMOVED FROM THE AIRCRAFT. FINDINGS AT SHOP VISIT FOUND  C-5 BLADE  WITH A PIECE MISSING FROM THE T/E TIP (APPROX. 0.750 X 0.750 INCH).  THIS IS A TEXTBOOK EXAMPLE OF ONE OF THE FAILURE MODES ASSOCIATED WITH THE "HPC FRONT END DURABILITY" ISSUES BEING ADDRESSED BY PWA.

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