# SDR DJFA20120529001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2012
- Submitted: June 4, 2012
- Operation: Air carrier
- Aircraft: [N733FL](https://openairdocs.org/aircraft/N733FL), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500027
- Aircraft time: 5,964 hours, 3,723 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 73838431
- Part serial: 970405
- Condition: Damaged
- Part time: 5,964 hours, 3,723 cycles
- 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/DJFA20120529001

## Discrepancy

WHILE OPERATING ON THE GROUND WITH THE COCKPIT PAC IN MAX COOL, CREW REPORTED A LOUD BANG, FOLLOWED BY A SMOKE ODOR.  NO FIRE OR VISIBLE SMOKE WAS NOTED. THE COCKPIT ACM WAS FOUND FAILED AND REPLACED.

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