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Reference Speed (Vref)
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Category: | General | ![]() |
Content source: | SKYbrary | ![]() |
Content control: | SKYbrary | ![]() |
Definition
1.3 times the stalling speed in the stated landing configuration and at the prevailing aircraft weight. This is the speed required as the landing runway threshold is crossed at a height of 50 feet15.24 m <br /> in landing configuration if the calculated aircraft performance is to be achieved.