# SDR P5CA2011082000458

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 20, 2011
- Submitted: August 22, 2011
- Operation: Air carrier
- Aircraft: [N452PA](https://openairdocs.org/aircraft/N452PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30810
- Aircraft time: 47,111 hours, 7,689 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: IN
- 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/P5CA2011082000458

## Discrepancy

PRIOR TO DEPARTURE, BURNING SMELL REPORTED BY FLIGHT CREW.  FOUND EQUIPMENT EXHAUST FAN HOT AND SMELLING BURNT.  INSPECTED FAN WITH NO FINDINGS.  DEACTIVATED EXHAUST FAN AND DEFERRED ITEM WITH MEL 21-58-4.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.