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MD11 flight crew detects an electrical burning smell during cruise at FL370 and suspects the avionics cooling fan. Maintenance control is consulted and the fan circuit breaker is pulled and the smell quickly dissipates. Flight continues to destination.
| Attributes | |
| ACN | 1070211 |
| Time | |
| Date | 201302 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZAN.ARTCC |
| State Reference | AK |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Cooling Fan any cooling fan |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 25 Flight Crew Total 6700 Flight Crew Type 2700 |
| Person 2 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 50 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor |
Narrative:
During cruise; the avionics compartment fan turned on and we experienced a mild strange odor and an associated thud. We contacted maintenance control via satcom and they concurred that we should pull the avionic compartment fan circuit breaker as a precaution. Maintenance control; dispatch; and us as a crew; decided it was the proper course of action. Within minutes of pulling the breaker; the acrid odor was dissipated. We continued without further incident and the aircraft discrepancy was documented in the logbook.
Original NASA ASRS Text
Title: MD11 flight crew detects an electrical burning smell during cruise at FL370 and suspects the avionics cooling fan. Maintenance Control is consulted and the fan circuit breaker is pulled and the smell quickly dissipates. Flight continues to destination.
Narrative: During cruise; the avionics compartment fan turned on and we experienced a mild strange odor and an associated thud. We contacted Maintenance Control via Satcom and they concurred that we should pull the avionic compartment fan circuit breaker as a precaution. Maintenance Control; Dispatch; and us as a crew; decided it was the proper course of action. Within minutes of pulling the breaker; the acrid odor was dissipated. We continued without further incident and the aircraft discrepancy was documented in the logbook.
Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.