# SDR 2008UALA01000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 22, 2008
- Submitted: March 24, 2008
- Operation: Air carrier
- Aircraft: [N792UA](https://openairdocs.org/aircraft/N792UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26934
- Aircraft time: 46,853 hours, 6,965 cycles
- Engine: Pwa PW4090
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Control Box
- Part number: 4885501002
- Condition: Faulty
- Location: Flight Control
- Stage of operation: CR
- 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/2008UALA01000

## Discrepancy

FLIGHT CONTROL SYSTEM MESSAGE OCCURRED IN FLIGHT.  PERFORMED EXTENSIVE TROUBLESHOOTING, & CHRONIC SYSTEM REVIEW.  MANY UNITS PREVIOUSLY REPLACED BUT PROB NOT ENTIRELY CORRECTED.  REPLACED POWER SUPPLY ASSY & ACE L-1 A SECOND TIME.  ALL TESTS PERFORMED WITH GOOD RESULTS, A/C RETURNED TO SERVICE.

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