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At a given mass, the stalling speed of a twin engine aircraft is 100 kt in the landing configuration. The minimum speed a pilot must maintain in short final is:
  • A
    120 kt
  • B
    125 kt
  • C
    130 kt
  • D
    115 kt
From the approach down to the landing screen height the airplane must have attained the landing reference speed, known as VREF.
VREF for Class A airplane must be no less than then 1.23 the stall reference speed in the landing configuration (1.23VSR0).
VREF for all other classes of airplanes must be no less than 1.3 times the stall speed (1.3VS0) in the landing configuration.

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