# SDR ASAA2013040494377

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2013
- Submitted: April 8, 2013
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41730
- Aircraft time: 1,516 hours, 509 cycles
- System (JASC): [2435 · Starter-Generator](https://openairdocs.org/jasc/2435)
- Part: Starter Gen
- Part number: 28B5459STYLEA
- Part serial: 102F0262
- Condition: Failed
- Location: Apu
- Part time: 421 hours, 779 cycles
- Stage of operation: CR
- 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/ASAA2013040494377

## Discrepancy

ENROUTE AT FL 360, SAT -60 ATTEMPTED THREE APU CSS.  ALL THREE ATTEMPTS NO START. WITH A APU FAULT LIGHT ON AFTER EA START.  FAULT LIGHT WENT OUT WITHIN 5 MINUTES OF EA ATTEMPT.  ACFT GROUNDED.  FOUND FAULT CODE 49-41012.  ACCOMPLISHED TASK 49-40-803.  APU STARTED ON GROUND.  APU IGNITION WAS ERRATIC. REPLACED STARTER GENERATOR IAW MM 49-41-21.  APU STARTS NORMAL.

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