# SDR DXTA2009102103820

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2009
- Submitted: October 30, 2009
- Operation: Air carrier
- Aircraft: [N933QS](https://openairdocs.org/aircraft/N933QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500133
- Aircraft time: 8,361 hours, 5,100 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 73838433
- Part serial: 921241A
- Condition: Seized
- Part time: 593 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2009102103820

## Discrepancy

ON THE GROUND AND APU RUNNING, SEVERAL SECONDS AFTER ISOLATION  VALVE OPENED SMOKE APPEARED IN THE COCKPIT WITH AN OILY SMELL.

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