# SDR ASAA2015040411230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2015
- Submitted: April 15, 2015
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 3,971 hours, 1,321 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Apu
- Part number: 38007021
- Part serial: P10212
- Condition: Failed
- Location: Apu Bay
- Part time: 886 hours, 1,920 cycles
- 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/ASAA2015040411230

## Discrepancy

APU FAULT LIGHT ILLUMINATED DURING START ATTEMPT.  ACFT GROUNDED.  R & R APU IAW TASK CARD 78349010.  OPS CHECK IAW AMM 49-11-00-710-801.  OPS & LEAK CHECKED GOOD. WHILE 49-99A APPLIED, APU FAULT LIGHT ILLUMINATED ON START RAN QRH WAITED 5 MINS LIGHT WENT OUT SECOND START SUCCESSFUL.

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