# SDR UALA2011090504791

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 5, 2011
- Submitted: September 12, 2011
- Operation: Air carrier
- Aircraft: [N772UA](https://openairdocs.org/aircraft/N772UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26930
- Aircraft time: 64,333 hours, 11,711 cycles
- Engine: Pwa PW4077
- System (JASC): [2710 · Aileron Control System](https://openairdocs.org/jasc/2710)
- Part: Pcu
- Part number: S251W120100
- Part serial: 39
- Condition: Faulty
- Location: Nr 1
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011090504791

## Discrepancy

PFC CONTROL LANES DISPLAYED.  REPLACED LEFT O/B PCU AND CONFIDENCE TEST AND RIG CHECK REF MM.  COMPLETED INSP OF PCU.

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