# SDR DXTA2008120803392

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2008
- Submitted: December 8, 2008
- Operation: Air carrier
- Aircraft: [N640QS](https://openairdocs.org/aircraft/N640QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605260
- Aircraft time: 6,468 hours, 5,124 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Condition: Smoke
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2008120803392

## Discrepancy

FOUL ODOR COMING OUT OF ENVIRONMENTAL SYSTEM.  ITS A MUSTY ODOR AND ITS MOST NOTICEABLE AT A RELATIVELY WARM OUTSIDE TEMP WITH CABIN SET TO COOL.  WITH THE APU BLEED ON THERE WAS BLUE SMOKE COMING OUT OF THE WEMACS.  KBNA-KSAT.

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