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Old 13th Jan 2013, 18:26
  #423 (permalink)  
pattern_is_full
 
Join Date: Jan 2008
Location: Denver
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I don't understand the engines being commanded off ?

Were they trying to fly at that instant or stop? If they were trying to stop wouldn't they have been commanding reverse?
As I understand it from kulverstukas et al. -

- Reverse thrust commanded
- Engines spooled up but reverser mechanism did not deploy, due to (either or both) jammed cockpit lever, or lack of WoW (due to wheelbarrowing on nosewheel due to excess speed (holes in cheese)).
- resulting in high FORWARD thrust
- emergency fuel cutoffs pulled as last resort to kill forward thrust

One pilot (FO?) started raising the flaps with the apparent intention of a go-around - but so far as I can see from the info so far, forward TO thrust was never intentionally applied (but occurred anyway due to the reverser glitch(es)).

It is an interesting conundrum that the braking devices in aircraft (spoilers, wheel brakes, reversers) only work or deploy if one is already slow enough to put weight on the wheels. If you are really too fast - they may not engage at all.
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