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B767 flight crew experiences a stall warning at FL370 after being dispatched with an inoperative autothrust system. Recovery is initiated and a descent to FL350 is requested.
| Attributes | |
| ACN | 1170857 |
| Time | |
| Date | 201405 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZZ.ARTCC |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Throttle/Power Lever |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
Stall warning event mel's: thrust management system/autothrottle system inoperative/eec inoperative event occurred at FL370 .78 mach; aircraft weight approximately 311;000/sat -45/cruise N1~95%. Crew positions: relief pilot (fb) in left hand seat/first officer (first officer) in right hand seat [and] captain on rest break in crew seat. Flight conditions clear with light chop. Crew first alerted to an approach to stall condition was onset of stick shaker. Upon recognition; fb and first officer immediately initiated the approach to stall maneuver. First officer gained radio clearance to descend to FL350. Fb descended and leveled at FL350. Capt felt/recognized unexpected change of altitude and returned to flt deck. Flight continued to destination without further incident. Flight crews must always remain vigilant in performance of their duties to prevent complacency that can result in this type of event; especially on long flights with inoperative systems.
Original NASA ASRS Text
Title: B767 flight crew experiences a stall warning at FL370 after being dispatched with an inoperative autothrust system. Recovery is initiated and a descent to FL350 is requested.
Narrative: Stall Warning Event Mel's: Thrust Management System/Autothrottle System Inoperative/EEC Inoperative Event Occurred at FL370 .78 mach; aircraft weight approximately 311;000/SAT -45/cruise N1~95%. Crew positions: Relief Pilot (FB) in left hand seat/First Officer (FO) in right hand seat [and] Captain on rest break in crew seat. Flight conditions clear with light chop. Crew first alerted to an approach to stall condition was onset of stick shaker. Upon recognition; FB and FO Immediately initiated The Approach to Stall Maneuver. FO gained radio clearance to descend to FL350. FB descended and leveled at FL350. Capt felt/recognized unexpected change of altitude and returned to Flt Deck. Flight continued to destination without further incident. Flight crews must always remain vigilant in performance of their duties to prevent complacency that can result in this type of event; especially on long flights with inoperative systems.
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.