# SDR UALA2009031000086

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2009
- Submitted: January 8, 2010
- Operation: Air carrier
- Aircraft: [N781UA](https://openairdocs.org/aircraft/N781UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26945
- Aircraft time: 50,199 hours, 9,224 cycles
- Engine: Pwa PW4077
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Control Unit
- Part number: 4885501002
- Condition: Faulty
- Location: Stab Actuator
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009031000086

## Discrepancy

STABILIZER MESSAGE IN "RED" ON UPPER EICAS. STABILIZER DOES NOT RESPOND TO ANY INPUTS.  REPLACED ACTUATOR CONTROL ELECTRONICS "C" AND PFC "C". ACCMP'D STAB TRIM TEST TO UNLATCH FAULT.  STAB TRIM MESSAGE HAS CLEARED AND STABILIZER NOW RESPONDS TO INPUTS.

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