PPRuNe Forums - View Single Post - Air Asia Indonesia Lost Contact from Surabaya to Singapore
Old 8th Feb 2015, 10:39
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Ian W
 
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Originally Posted by auraflyer
I was just putting the logical result of Ian W's suggestion into words as it is an interesting idea and I try to keep an open mind -- but I don't think the solution is more automation, hence why I put "controversially" and why I ended how I did.

I won't get into a fight, since you drive A320s and I don't, but AFAIK existing stick pusher logic includes an altitude minimum (e.g. Q400 only activates > 200 feet AGL), so there's no reason you would not implement equivalent logic *if* you were to do this.
I am glad to see that my suggestion triggered some discussion. If I were looking to design something along those lines I would expect to use AOA and probably a variable delay dependent on flight phase. A parameterized delay would prevent spurious warnings triggering trim changes. Although I note from other events that spurious warnings seem to trigger zoom climb in alternate law.
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