# SDR UPS05M44934

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2005
- Submitted: July 20, 2005
- Operation: Air carrier
- Aircraft: [N273UP](https://openairdocs.org/aircraft/N273UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48574
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Condition: Inoperative
- Location: Autopilot
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS05M44934

## Discrepancy

ATB - BOTH AUTO PILOTS FAILED SIMULTANEOUSLY.  TRIED NUMEROUS TIMES TO RE-ENGAGE, FINALLY ONE OF THEM WAS BACK ON LINE, AND IT LATER FAILED AGAIN     REMOVED AND REPLACED NR 2 FCC, BOTH FCC'S PASSED RTS TEST PER MM 22-01-03-4.

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