# SDR CALA0500435

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2005
- Submitted: December 12, 2005
- Operation: Air carrier
- Aircraft: [N57863](https://openairdocs.org/aircraft/N57863), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32587
- Aircraft time: 14,511 hours, 4,516 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 731376B
- Condition: Inoperative
- Location: Equip Cool. Sys
- Stage of operation: DE
- 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/CALA0500435

## Discrepancy

A SMOKY ODOR WAS REPORTED IN THE COCKPIT AND CABIN WHILE ON DESCENT INTO LAS.  THE ODOR CLEARED WITHIN 2-3 MINUTES.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  MAINTENANCE PERFORMED INSPECTIONS IAW MM 05-51-58 AND LOCATED THE SOURCE OF THE ODOR AS COMING FROM A FAILED FORWARD EQUIPMENT COOLING FAN.  THE FORWARD EQUIPMENT COOLING FAN WAS REMOVED AND REPLACED.  LEAK AND OPERATIONAL CHECKS WERE GOOD IAW MM 21-58-06.

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