# SDR UIEA200800005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2007
- Submitted: January 14, 2008
- Operation: Air carrier
- Aircraft: [N522MC](https://openairdocs.org/aircraft/N522MC), registered now
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21783
- Aircraft time: 99,127 hours, 19,870 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Selector Panel
- Part number: 2590624933
- Part serial: 77070637
- Condition: Failed
- Location: Autopilot
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200800005

## Discrepancy

A/P F/D SYSTEM "A" ROLL DC CIRCUIT BREAKER POPPED, PREVIOUSLY DETECTED ELECTRICAL ODOR MOMENTARILY.

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