# SDR UALA2012071603839

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2012
- Submitted: July 18, 2012
- Operation: Air carrier
- Aircraft: [N666UA](https://openairdocs.org/aircraft/N666UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29238
- Aircraft time: 50,759 hours, 13,547 cycles
- Engine: Pwa PW4056
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Check Valve
- Part number: S210T17012
- Part serial: 2889
- Condition: Damaged
- Location: Recirculation
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012071603839

## Discrepancy

FOUND LEFT RECIRCULATION FAN PLENUM ASSY DAMAGED.  REPAIRED DAMAGED AREAS PER MM,  FOUND 1 PLENUM CHECK VALVE FLAP BROKEN FROM HINGE AREA.    REPLACED CHECK VALVE PER IPC 21-25-01-004.

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