# SDR DXTA2009042103611

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2009
- Submitted: April 21, 2009
- Operation: Air carrier
- Aircraft: [N670QS](https://openairdocs.org/aircraft/N670QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605170
- Aircraft time: 7,530 hours, 5,872 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38007221
- Part serial: P230
- Condition: Leaking
- Location: Apu Bay
- Part time: 7,125 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2009042103611

## Discrepancy

AFTER APU START UP, COCKPIT AND CABIN FILLED WITH SMOKE. NOT SURE IF IT WAS ELECTRICAL OR ENVIRONMENTAL.  APU BLEED AIR WAS ON.  REMOVED & REPLACED APU IAW MM 49-10-00 & MM 49-10-00.  OPERATION & LEAK CHECKS GOOD.

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