# SDR AWK2008F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2008
- Submitted: August 20, 2008
- Operation: Air carrier
- Aircraft: [N747XJ](https://openairdocs.org/aircraft/N747XJ), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500247
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 414F
- Condition: Odor
- Location: Cockpit
- Part time: 2,993 hours
- Stage of operation: NR
- 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/AWK2008F00000

## Discrepancy

CREW REPORTED A PUFF OF SMOKE FROM BEHIND THE COPILOT SEAT AND A BURNED ELECTRICAL ODOR DURING DESCENT INTO CMH.  REMOVED COCKPIT ZONE TEMPERATURE SENSOR/FAN ASSY COVER AND FOUND TRACE EVIDENCE OF SMOKE MARKS.  SUSPECT THAT FOD WAS TRAPPED IN THE ZONE TEMPERATURE FAN ASSY AND CAUSED SMOKE.  REMOVED AND INSTALLED A NEW COCKPIT ZONE TEMPERATURE SENSOR P/N: 9914130-6 AND FAN ASSY P/N: 414F.  (S)

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