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In accordance with CS-25, which of the following listed speeds are used for the determination of V2MIN?
  • A
    V2, VR.
  • B
    VMCG, V2.
  • C
    VSR, VMCA.
  • D
    VLOF, VMCA.

V2MIN
The minimum take-off safety speed, or the speed at the screen height, with the critical engine inoperative.

Class A aircraft V2MIN may not be less than:

  • 1.13VSR for 2 and 3 engine turboprops and all turbojets without provision for obtaining a significant reduction in the one engine inoperative power-on stalling speed
  • 1.08VSR for turboprops with more than 3 engines and turbojets with provision for obtaining a significant reduction in the one engine inoperative power-on stalling speed.
  • 1.1VMC

Class A uses VSR, the stall reference speed, instead of VS1 which is basically the same.

Class B aircraft V2MIN may not be less than:

  • VMC for single engine
  • 1.1 VMC for twin
  • VS1

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