# SDR UALA2012080804310

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2012
- Submitted: August 24, 2012
- Operation: Air carrier
- Aircraft: N590UA
- Make and model: Boeing 757222
- Aircraft serial: 28708
- Aircraft time: 57,961 hours, 16,227 cycles
- Engine: Pwa PW2037
- System (JASC): [8012 · Engine Start Valves/Controls](https://openairdocs.org/jasc/8012)
- Part: Start Valve
- Part number: 8113901
- Part serial: 14
- Condition: Faulty
- Location: Lt Engine
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012080804310

## Discrepancy

LEFT ENGINE START VALVE FAILED TO OPEN.  REPLACED START VALVE, OPS CHECKED NORMAL.

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