# SDR ASAA2012110393249

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 2012
- Submitted: November 7, 2012
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 19,488 hours, 6,189 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: 38007021
- Part serial: P7769
- Condition: Failed
- Location: Apu Bay
- Part time: 6,497 hours, 8,650 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012110393249

## Discrepancy

DURING MX TROUBLESHOOTING, CSS FAILED WITH FAULT LIGHT.   R & R APU .  ACCOMPLISHED APU START AND OPERATION IAW 49-11-00-860-801.  NO LEAKS NOTED.  APU OPS TESTED GOOD IAW AMM 49-11-00-701-801.

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