# SDR ASAA2015032311092

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2015
- Submitted: March 25, 2015
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 3,838 hours, 1,270 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Unknown
- Location: Unknown
- Stage of operation: TX
- 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/ASAA2015032311092

## Discrepancy

APU ON STARTUP INTO GATE, GOT FAULT ANNUNCIATOR, SHUT IT OFF.  ACFT GROUNDED. ACCOMPLISHED APU BITE, FOUND FAULT 49-41012.  NO ROTATION SHUTDOWN.  MADE 2 APU STARTS, START NORMAL, SUSPECT APU COLD SOAK.

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