# SDR CALA0600259

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2006
- Submitted: July 21, 2006
- Operation: Air carrier
- Aircraft: N17627
- Make and model: Boeing 737524
- Aircraft serial: 27531
- Aircraft time: 31,261 hours, 16,514 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Fire
- Stage of operation: TX
- How discovered: 9
- Nature of condition: A
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA0600259

## Discrepancy

APU TAIL PIPE FIRE.  REPLACED IGNITION UNIT AND EXCITER AND COMBUSTION CHAMBER PER 49-31-42.

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