# SDR ASAA2016012915190

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2016
- Submitted: February 2, 2016
- Operation: Air carrier
- Aircraft: [N409AS](https://openairdocs.org/aircraft/N409AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41733
- Aircraft time: 12,002 hours, 3,901 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Unknown
- Stage of operation: CR
- 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/ASAA2016012915190

## Discrepancy

APU HAS HISTORY OF CSS FAILED ON FIRST ATTEMPT.  ACFT GROUNDED. ACCOMPLISHED APU BITE TEST. ACCOMPLISHED FIM TASK 49-40, TASK 801.

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