# SDR ASAA2015011810284

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2015
- Submitted: January 21, 2015
- Operation: Air carrier
- Aircraft: [N588AS](https://openairdocs.org/aircraft/N588AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35685
- Aircraft time: 27,594 hours, 8,442 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Exciter
- Part number: 38880587
- Part serial: 086971100783
- Condition: Failed
- Location: Apu
- Part time: 5,827 hours, 10,678 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/ASAA2015011810284

## Discrepancy

TRIED TO START APU FAULT LIGHT ON. FAULT CODE 49-41011.  ACFT GROUNDED. REMOVED APU IGNITION UNIT IAW MM 49-41-31-000-801. INSTALLED NEW APU IGNITION UNIT IAW MM 49-41-31-400-801.  APU OPS CHECKED OK.  COMPLETED MM 49-41-31-400-801.

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