FDR data showed that the aircraft had crossed the runway threshold at a height of about 200ft compared to the standard landing performance assumption of 50 feet and at a speed in excess of 160 KIAS compared to the Vref for the prevailing aircraft weight of 144 KIAS. Due to this excessive speed prior to touchdown, the Flap Load Relief had moved the flaps from 40° to 30° and when the speed reduced below 158 knots, the flaps moved to the selected position of 40° during the flare which caused a prolonged float and a late touchdown. "BALLON EFFECT " HERE IS THE MOST CRITICAL...
Posted on: Tue, 20 Aug 2013 07:08:22 +0000
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