# SDR KCSA07073

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2007
- Submitted: September 25, 2007
- Operation: Air carrier
- Aircraft: [N703CK](https://openairdocs.org/aircraft/N703CK), registered now
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21939
- Aircraft time: 88,735 hours, 17,004 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: B, E
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA07073

## Discrepancy

SMOKE (ODOR) FROM AIR COND SYSTEM.  SMOKE OBSERVED FROM FLT DECK FAN.  SMOKE (ODOR) STOPPED WHEN FLT DECK FAN OFF.  WHEN FLT DECK FAN ON, MADE UNUSUAL SOUND W/VIBRATION.

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