# SDR KCSA11051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2011
- Submitted: September 6, 2011
- Operation: Air carrier
- Aircraft: [N708CK](https://openairdocs.org/aircraft/N708CK), registered now
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21937
- Aircraft time: 100,282 hours, 18,914 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Cooling Fan
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: DE
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA11051

## Discrepancy

AT 16,000FT ALTITUDE, DESCENT TO OAKN SMELLED FUMES IN COCKPIT.  OBSERVED NUMBER 1 PACK TRIP LIGHT ILLUMINATED.  BYPASS VALVE INLET/EXIT DOOR'S PROPERLY PREPOSITIONED.  TURNED OFF FLIGHT DECK FAN AND WENT ON O2.  DID NOT RESET PACK OR FAN.  RESET PACK TRIP LIGHT.  DID TROUBLESHOOTING PER FIM 21-50-00, 21-50 HD AND B747 MM 21-51-00.  FOUND NO FAULTS AT THIS TIME.  NUMBER 1 PACK OPERATES NORMAL IAW B747 MM 21-51-00.  NO DEFECTS NOTED.  FLIGHT DECK RECIRCULATION FAN INOPERATIVE. THIS IS TRANSFERRED TO DMI  70800394.

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