# SDR UALA2010042201347

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2010
- Submitted: April 23, 2010
- Operation: Air carrier
- Aircraft: [N775UA](https://openairdocs.org/aircraft/N775UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26947
- Aircraft time: 59,160 hours, 10,858 cycles
- Engine: Pwa PW4077
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: S210W1101012
- Part serial: 89
- Condition: Out Of Tolerance
- Location: Lt Position
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010042201347

## Discrepancy

NR 1 ENGINE LT INTERMEDIATE PRESSURE VALVE FLAPPER PLATE WORN BELOW LIMITS.   REPLACED NR 1 ENGINE LT IP VALVE.  REPLACEMENT UNIT IS FUNCTIONAL.

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