# SDR ASAA2018070325278

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2018
- Submitted: July 9, 2018
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 17,112 hours, 5,640 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Exciter
- Part number: 38880585
- Condition: Malfunctioned
- Location: Apu
- 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/ASAA2018070325278

## Discrepancy

APU FAILED TO START AFTER LANDING. TWO ATTEMPTS FAULT LIGHT ILLUM. GROUNDED - YES. REMOVED AND REPLACED APU IGNITION EXCITER PER AMM 49-41-31 OPS CHECK NORMAL.

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