# SDR UALA2012100105560

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2012
- Submitted: November 15, 2012
- Operation: Air carrier
- Aircraft: [N775UA](https://openairdocs.org/aircraft/N775UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26947
- Aircraft time: 70,246 hours, 12,471 cycles
- Engine: Pwa PW4077
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 11511007
- Part serial: 37
- Condition: Faulty
- Location: Cabin Pressure
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012100105560

## Discrepancy

REPLACE THE AIR SUPPLY CABIN PRESSURE CONTROLLER FOR LEFT PACK FLOW CONTROL VALVE NOT BEING ABLE TO BE SHUTOFF.  REPLACED ASCPC PER AMM, OPS CHECK GOOD AT THIS TIME.

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