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Old 27th May 2013, 01:41
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vilas
 
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grounded27
About a decade ago when I was flying 747 classic some of my collegues were doing it and highly recommending it. Somehow I never agreed with this practice. It was not company procedure. No Boeing document supported it. On the contrary the documents stated any delay in putting the nose down increases landing distance. Also it raises the nose very high and is not comfortable for passengers especially in first class. Aerodynamically speaking it defeats the purpose of ground spoilers because while spoilers spoil the lift you keep adding to it by increasing the angle of attack. Maximum braking results when full weight of the aircraft is on wheels. Also the risk of tail strike. If the runway length is plenty to spare or you have no other means of breaking including the accumulator only then may be justified.
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