PPRuNe Forums - View Single Post - AF447 final crew conversation - Thread No. 1
Old 27th Oct 2011, 21:19
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jjeppson
 
Join Date: Aug 2004
Location: Corinth,Texas
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Wink High altitude stalls

My last 777 sim session in July, I specifically requested we experience a high altitude stall. In my 33 years of commercial flying and 12 years of US Navy aviation, I could not remember ever seeing a high altitude stall demonstration.

We ran the sim up to 37,000 and disabled the automation (auto throttles, auto pilot). Pulled the power off and waited. When the aircraft stalled it entered into a rapid descent, nose up attitude with some wing rocking. We first applied max power without lowering the nose; no recovery. Aircraft did not exit a stalled condition until we agressively shoved the yoke forward, reduced AOA, and regained flying speed.

It sure made a believer out of me. If you stall at higher altitudes (above 30,000), it will take an agressive push over to recover.

We all practice stalls at lower altitudes in training where all it takes is the addition of power and a slight lowering of the nose to recover.

Next time you are in the sim, make your instructor demonstrate this.
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