# SDR AUS20011217

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2001
- Submitted: December 4, 2001
- Operation: Air carrier
- Make and model: Boeing 747-SP38
- Registry model: [Boeing 747-SP38](https://openairdocs.org/model/boeing-747-sp38) (OpenAirDocs)
- Engine: Rroyce RB211524D419
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: 37571981
- Condition: Failed
- Location: Autopilot
- Part time: 43,413 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AUS20011217

## Discrepancy

(AUS) UPPER YAW DAMPER COMPUTER FAULTY.

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