# SDR 2007UALA00678

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2007
- Submitted: March 13, 2007
- Operation: Air carrier
- Aircraft: [N518UA](https://openairdocs.org/aircraft/N518UA), registered now
- Make and model: Boeing 757222
- Aircraft serial: 24871
- Aircraft time: 55,654 hours, 19,366 cycles
- Engine: Pwa PW2037
- Engine time: 36,432 hours, 11,292 cycles
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Compressor
- Condition: Stalled
- Location: Nr 2 Engine
- 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/2007UALA00678

## Discrepancy

RTFL DUE TO NR 2 ENGINE COMPRESSOR STALLS.  [SUP 05-18-07]  BOROSCOPE NR 2 ENG SERIAL NR 727193, FOUND SEVERE DAMAGES ON COMPRESSOR STAGES 16 & 17 THROUGH AP8.  FOUND RT ENGINE BLADE 1 & 2 GOUGES IN LEFT EDGES.  BLADES 1 AND 2 OK.  REPLACEMENT OF NR 2 ENG NR 4 BEARING SCAVENGE VALVE. ENGINE RUN - ALL PARAMETERS WITHIN NORMAL RANGE. REPLACED NR 2 ENGINE.

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