the FDR data isnt pointing to tailplane iceing... the nose didnt drop un commanded.. its pulled upward..
If you remember the icing video its an uncomanded drop.. not a stall
WARNING (as in its not stalled yet.) as in this crash.
although with all the emphasis put on tailplane icing on turboprops nostatic's explanations are interesting.
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Seems like they would have been a lot more aware of conditions if they were making pitch and power changes
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Ahh. I sensed some condescension towards use of the autopilot in your first post.
It was fine to have it on.. the FDR data isnt pointing to tailplane stall or severe degradation in handling.. The autopilot is a good thing.. helps alot more then it hurts. trust me.. it isnt a "Lazy pilot helper" its a safety tool. If you had to constantly balance a broom handle on its end why you tried to set up a complicated machine with all the numbers correct and switches correct..you could do it.. but you would have more brainpower to evaluate WHAT you were doing if you had an "auto balancer"
" NO AUTOPILOT TO BE USED DURING FLIGHT IN ANY ICING CONDITIONS - period."
this aircraft and autopilot is certified to a high standerd... its ok to use the autopilot in ice.
ury 917 you have a PM