# SDR ASAA2020041432645

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2020
- Submitted: April 14, 2020
- Operation: Air carrier
- Aircraft: [N467AS](https://openairdocs.org/aircraft/N467AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 22,867 hours, 7,456 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Starter Gen
- Part number: 28B5459STYLEA
- Part serial: 97B1015
- Condition: Faulted
- Location: Apu
- Part time: 8,762 hours, 14,822 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020041432645

## Discrepancy

APU FAULT LIGHT. WILL NOT START. GROUNDED - YES. ACCOMPLISHED APU BITE FOUND ERROR CODE 49-41012 NO APU ROTATION SHUTDOWN. REMOVED AND REPLACED STARTER-GENERATOR REF B737-900 AMM 49-41-21/401. STARTER-GENERATOR INSTALL TEST COMPLETED - NO DEFECTS NOTED. CURRENT STATUS - NO FAULTS.

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