# SDR 2008UALA05776

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2008
- Submitted: October 15, 2008
- Operation: Air carrier
- Aircraft: N550UA
- Make and model: Boeing 757222
- Aircraft serial: 25398
- Aircraft time: 63,838 hours, 18,512 cycles
- Engine: Pwa PW2037
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Bypass Valve
- Condition: Leaking
- Location: Wing
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA05776

## Discrepancy

FOUND LEADING EDGE BYPASS VALVE (V10059) LEAKING, CRACKED CASTING.  CRACK (FATIGUE) IN CASTING.  REPLACED LEADING EDGE BYPASS VALVE.

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