# SDR ASAA2017062421178

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2017
- Submitted: June 26, 2017
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 34,902 hours, 10,600 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Igniter
- Part number: 38880587
- Part serial: 120936
- Condition: Inoperative
- Location: Apu
- Part time: 3,147 hours, 6,265 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017062421178

## Discrepancy

APU WONT START, TRIED 3 TIMES. ACFT GROUNDED. PERFORMED APU BITE IAW FIM 49-60, TASK 801.  APU HAS FAULT MSG 49-41011 NO FLAME SHUTDOWN. COMPLIED WITH FIM TASK 49-40 TASK 802, CDS REPORTS NO FLAME LAST THREE STARTS AS RECOMMENDED BY FIM TASK. REMOVED AND REPLACED IGNITER PLUG, IGNITER LEAD, AND IGNITION UNIT. IAW AMM TASKS 49-41-51, 49-41-52, AND 49-41-31. GROUND VERIFICATION SUCCESSFUL IAW AMM 49-11-00. RAN APU THREE TIMES NO DEFECTS NOTED. NO FAULTS FOUND.

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