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B737-700 flight crew experiences a right bleed trip that cannot be reset at FL410. Thirty seconds later the left bleed trips and an emergency descent is initiated. When the smell of something overheating is detected the crew elects to divert to the nearest suitable airport.
| Attributes | |
| ACN | 1146096 |
| Time | |
| Date | 201401 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pneumatic System |
| Person 1 | |
| Function | Captain |
| Experience | Flight Crew Last 90 Days 200 |
| Person 2 | |
| Function | First Officer |
| Experience | Flight Crew Last 90 Days 236 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor |
Narrative:
We were at cruise at FL410 when the right bleed tripped off. Using our QRH procedures; we tried a reset. The bleed tripped again after about 10 seconds. As we delved back into the QRH; the left bleed tripped also. We tried a reset which failed. We then declared an emergency and began an emergency descent and turn back. When we then detected a smell of something overheating we decided to land at the nearest suitable airport. On landing; we had emergency vehicles assess the aircraft for signs of smoke or fire. Since there were none; we proceeded to the terminal.
Original NASA ASRS Text
Title: B737-700 flight crew experiences a right bleed trip that cannot be reset at FL410. Thirty seconds later the left bleed trips and an emergency descent is initiated. When the smell of something overheating is detected the crew elects to divert to the nearest suitable airport.
Narrative: We were at cruise at FL410 when the right bleed tripped off. Using our QRH procedures; we tried a reset. The bleed tripped again after about 10 seconds. As we delved back into the QRH; the left bleed tripped also. We tried a reset which failed. We then declared an emergency and began an emergency descent and turn back. When we then detected a smell of something overheating we decided to land at the nearest suitable airport. On landing; we had emergency vehicles assess the aircraft for signs of smoke or fire. Since there were none; we proceeded to the terminal.
Data retrieved from NASA's ASRS site 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.