# SDR ASAA2018061165005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2018
- Submitted: June 11, 2018
- Operation: Air carrier
- Aircraft: [N435AS](https://openairdocs.org/aircraft/N435AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43292
- Aircraft time: 18,535 hours, 6,113 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Malfunctioned
- 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/ASAA2018061165005

## Discrepancy

APU DID NOT START ON GROUND,  FAULT LIGHT ILLUMINATED AND EXTINGUISHED AFTER 5 MINUTES IAW THE QRH.  ACFT GROUNDED.  ATTEMPTED START ON GROUND . APU STARTED NORMALLY. APU ENGINE PARAMETERS AND READINGS ARE NORMAL. NO ACFT HISTORY.  FOUND MESSAGE 49-41011, NO FLAME SHUTDOWN, ON CDU.

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