# SDR DXTA200601407

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2006
- Submitted: May 31, 2006
- 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: 5,249 hours, 3,251 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Part number: 73838433
- Part serial: 200012230
- Condition: Failed
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200601407

## Discrepancy

DURING ENGINE START WE SMELLED A VERY STRONG, PUNGENT ENVIROMENTAL ODOR.  SUSPECT COCKPIT PAC FAILURE. VERIFIED COCKPIT PAC FAILED.REMOVED AND REPLACED COCKPIT ACM IAW MM 21-51-00. OPERATIONAL AND LEAK CHECK GOOD.

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