# SDR UIEA200700311

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2007
- Submitted: August 24, 2007
- Operation: Air carrier
- Aircraft: [N498MC](https://openairdocs.org/aircraft/N498MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29259
- Aircraft time: 35,657 hours, 5,359 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Failed
- Location: Cockpit
- Stage of operation: NR
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200700311

## Discrepancy

PRIOR TO DISPATCH  BURNING SMELL IN FLIGHT DECK AND COOLING FAN AREA.  ITEM TRANSFERRED TO DMI M07-066 PER 21-58-4 (E/E COOLING EXHAUST FAN FAIL MESSAGE NR 21410 DISPLAYED).

---
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.