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Boeing amend 737 de-icing procedures & propose aircraft mods after near-stall inciden

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Boeing amend 737 de-icing procedures & propose aircraft mods after near-stall inciden

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Old 21st Dec 2013, 13:36
  #61 (permalink)  
 
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Why, stator vane, you don't set your stab before you take off?

The reason for trimming full nose down before deice was to prevent deicing fluid from entering the tail cone. Now we have to set it to take off position for the same reason?
Funny aircraft, this jurassic design still manages to surprise us after some 60 years of operation.
ManaAdaSystem is offline  
Old 21st Dec 2013, 21:59
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(...) this jurassic design still manages to surprise us after some 60 years of operation.
...and it still kills people!
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Old 21st Dec 2013, 23:28
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Originally Posted by ManaAdaSystem
Why, stator vane, you don't set your stab before you take off?

The reason for trimming full nose down before deice was to prevent deicing fluid from entering the tail cone. Now we have to set it to take off position for the same reason?
Funny aircraft, this jurassic design still manages to surprise us after some 60 years of operation.
No, it was to allow the horizontal stabiliser to drain. Which is why you still set full nose down overnight but 5ish for deicing.
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Old 22nd Dec 2013, 05:17
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Nope, it was to minimize the amount of fluid entering the elevator balance bays.
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Old 25th Dec 2013, 14:19
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Back to the control issue....

Never flown the 737, nor anything that big. Does the certification procedure require these jets to demonstrate some controllability with a jammed elevator?

And if so, what could have been the difference here where the aircraft was almost not controllable at all?
hawk37 is offline  

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