Originally Posted by
UAL T38 Phlyer
Because if you hit, say, mountain wave suffiecient to initiate Alpha Protection (ie, a stall warning), the autothrottles would go to TOGA. However, that might make you go faster than Mmo, and the jet would pitch-up to arrest the over-speed. This would re-trigger the alpha-prot, and round and round it goes. AND, you could go above max-rated altitude.
Just curious, but it that what was determined was going on where that Airbus was caught on video somewhere in Europe in a series of aggressive pitch ups, followed but pitching down, etc?