# SDR ASAA2012102093159

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2012
- Submitted: October 23, 2012
- Operation: Air carrier
- Aircraft: [N589AS](https://openairdocs.org/aircraft/N589AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35686
- Aircraft time: 18,565 hours, 5,877 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Exciter
- Part number: 38880587
- Part serial: 076971102453
- Condition: Malfunctioned
- Location: Apu
- Part time: 6,298 hours, 6,954 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/ASAA2012102093159

## Discrepancy

ON APU START THE FAULT LIGHT CAME ON AND SMOKE WAS OBSERVED COMING OUT OF THE APU EXHAUST.  ACCOMPLISHED FIM TASK 49-40, TASK 802, NO FLAME SHUTDOWN, MAINT MESSAGE 49-41011.  REPLACED IGNITER PLUG AND IGNITION EXCITER REF MM 49-41-51 AND 49-41-31.

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