# SDR USAASA07082

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2007
- Submitted: December 13, 2007
- Operation: Air carrier
- Aircraft: [N769US](https://openairdocs.org/aircraft/N769US), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1391
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: 3945123506
- Condition: Intermittent
- Location: Autopilot
- Part time: 27,167 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASA07082

## Discrepancy

CLT - FLT 1480  EN ROUTE MSP TO CLT.  DURING THE FLIGHT, AUTOPILOT 2 DISENGAGED.  THE CREW RE-ENGAGED THE AUTOPILOT, AND IT DISCONNECTED AGAIN, ALONG WITH AUTOPILOT 1.  AFTER HAND FLYING FOR ABOUT 20 SECONDS, THE STAB TRIM WHEEL JERKED WHILE AUTO-TRIMMING, THEN JAMMED IN ONE POSITION.  THE FLIGHT CONTINUED TO CLT.  AFTER LANDING, THE STABILIZER UNJAMMED AND CENTERED ITSELF.  MAINTENANCE PERFORMED A SYSTEM TEST OF THE THS SYSTEM.  NO FAULTS WERE NOTED.  THE ELAC 1 WAS THEN REPLACED AS A PRECAUTION.  A LAND VERIFY TEST WAS PERFORMED AND THE AIRCRAFT WAS CERTIFIED FOR CAT 111 STATUS.

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