# SDR ASAA2013103096261

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2013
- Submitted: November 5, 2013
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 26,636 hours, 8,007 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Exciter
- Part number: 38880587
- Part serial: 016971100057
- Condition: Failed
- Location: Apu
- Part time: 4,013 hours, 4,953 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/ASAA2013103096261

## Discrepancy

APU FAULT LIGHT CAME ON DURING START ON GROUND.  QRH ACCOMPLISHED FIVE MINUTES, LIGHT OUT AND RE-START.  OPS NORM.  ACFT GROUNDED. ACFT GROUNDED. PERFORM APU BITE PROCEDURE REF. FIM TASK 49-60 TASK 801. FOUND FAULT CODE 49-41180 LOGGED. CLEARED FAULT. PERFORMED SUBSEQUENT APU START. FAULT REMAINED CLEARED. TSR ISSUED. REPLACED EXCITER, IGNITION LEAD AND PLUG PER AMM 49-41-31. OPS CHECK GOOD NO FAULT REGISTERED.

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