# SDR ASAA2014013006740

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2014
- Submitted: February 3, 2014
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 20,976 hours, 6,517 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Ignition Unit
- Part number: 38880587
- Part serial: 076971102292
- Condition: Failed
- Location: Apu
- Part time: 8,548 hours, 8,393 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/ASAA2014013006740

## Discrepancy

APU FAULT LIGHT ILLUMINATED TWO ATTEMPS.  ACFT GROUNDED.   PERFORMED FIM TASK 49-40, TASK 802, FOUND IGNITION UNIT BAD.  R & R IGNITION UNIT REF AMM 49-41-31.  APU OPS CHECKED GOOD.  CLEARED MEL 49-1B, REMOVED PLACARD C/N 0130006, NO S/P, SEAM C.

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