# SDR 374PA0012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 2004
- Submitted: September 8, 2004
- Operation: Air carrier
- Aircraft: [N374PA](https://openairdocs.org/aircraft/N374PA), registered now
- Make and model: Boeing 737-36M
- Registry model: [Boeing 737-36M](https://openairdocs.org/model/boeing-737-36m) (OpenAirDocs)
- Aircraft serial: 28333
- Aircraft time: 18,165 hours, 12,497 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Circuit Breaker
- Condition: Failed
- Location: Warning System
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/374PA0012

## Discrepancy

AUTO PILOT DISENGAGES BY ITSELF AND AURAL WARNING CIRCUIT BREAKER KEEPS POPPING OUT AFFECTING AUTO PILOT DISCONNECT HORN.  REPLACED AURAL WARNING CIRCUIT BREAKER PER MM 31-26-00 AND OPS CHECKED.  PERFORMED SELF TEST OF AUTO PILOT SYSTEM PER MM 22-02-10 AND 22-03-10.  NO DEFECTS NOTED.

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