# SDR UALA2009120403750

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2009
- Submitted: December 4, 2009
- Operation: Air carrier
- Aircraft: [N228UA](https://openairdocs.org/aircraft/N228UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30556
- Aircraft time: 32,690 hours, 4,029 cycles
- Engine: Pwa PW40903
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 11511007
- Part serial: 027C0311
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009120403750

## Discrepancy

PACK R EICAS MSG ON TAXI OUT.  RAN CHECKLIST.  PACK R EICAS CYCLES ON AND OFF.  REPLACED RT AIR SUPPLY CABIN PRESSURE CONTROLLER.  SOFTWARE CONFIGURATION VERIFIED CORRECT.  TEST IN MAT PASSED.

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