747-400 Hi Alt Stall Recovery Training Video
Below link shows a sim 747-400 at FL400 cruising with A/P.
The thrust is reduced to approach stall. Note that the the plane pitches up automatically to try and maintain FL400 as power is reduced. Until finally it approaches stall with 5% pitch. In this case the Training Capt (Don Grange ) applies full thrust. This prevents a stall however the A/P is unable to correct its nose up attitude and is unable to increase its IAS. It can only be recovered by a gentle descent.
See link below and skip to about 5:15 min.
Last edited by xcitation; 9th Jun 2011 at 23:25.