PPRuNe Forums - View Single Post - American Airlines Flight 742 "flight control system" problems
Old 11th Apr 2013, 11:39
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CONF iture
 
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Originally Posted by Ashling
There was no risk of stalling in normal law and they were in normal law because Sully started the APU. I credit him for knowing that.
You don't start an APU to be stall protected.
You start an APU to secure a main source for electrical power.

You reckon you could fly a 737 that slow with stall warners and shake shakers going off and flare it under that pressure ....... well do you
Flying the stick shaker into a glide is not the objective, unless you want to practice slow flight on the edge of a stall warning when the slightest touch on the control column allows control of the AoA.

One single stick shaker activation on the Hudson would have unambiguously warned Sully that his attention on the speed was not ideal. Instead of it the system acted on the elevators independently of the stick position, masking the reality. Transparency has much better taste.

I will continue to be tense and uptight about stalls thankyou very much, at the heights Sully was at there would be no coming back from one, you would be well advised to take heed and not suggest incorrect stall recovery procedures as you clearly have.
Where ?
You would be well advised to quote ...

Opting for one of the airports around would have been an invitation for stalling, but not the Hudson, that's where that crew did so well.
But you're all over stall ... and there was none.
Any idea how unprotected aircrafts managed to glide without stalling ?
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