# SDR AU510001815

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2005
- Submitted: June 6, 2006
- Operation: General aviation
- Make and model: Boeing 737-800
- Registry model: [Boeing 737-800](https://openairdocs.org/model/boeing-737-800) (OpenAirDocs)
- Engine: Ge CFM56*
- System (JASC): [2620 · Extinguishing System](https://openairdocs.org/jasc/2620)
- Part: Circuit Breaker
- Condition: Tripped
- Location: Apu Fire Exting
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU510001815

## Discrepancy

APU FIRE EXTINGUISHING SYSTEM CIRCUIT BREAKER PULLED AND RED COLLARED.  CIRCUIT BREAKER RESET AND SYSTEM TESTED SERVICEABLE.  SUSPECT CIRCUIT BREAKER PULLED WHEN MEL APPLIED AND NOT RESET WHEN MEL CLEARED.

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