# SDR HNAA2013070900401

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2013
- Submitted: July 9, 2013
- Operation: Air carrier
- Aircraft: [N839EX](https://openairdocs.org/aircraft/N839EX), registered now
- Make and model: Dhav DHC8102
- Aircraft serial: 226
- Aircraft time: 52,581 hours, 59,289 cycles
- System (JASC): [4997 · APU System Wiring](https://openairdocs.org/jasc/4997)
- Part: Contactor
- Part number: AJA4N176
- Condition: Shorted
- Stage of operation: TX
- 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/HNAA2013070900401

## Discrepancy

APU FAILED AUX CIRCUIT BREAKER N-8 TRIPPED.  MX INSPECTED FIRE BOTTLE STILL CHARGED.  NO OBVIOUS DEFECTS OR DAMAGE NOTED.  R & R APU START CONTACTOR, RESET CIRCUIT BREAKER N8.  OPS CHECKED GOOD. FOUND CONTACTOR SHORTED.

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