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During a take-off roll an engine fails. The speed above which the roll may be continued using rudder alone is the

  • A.Ground minimum control speed
  • B.Rotation speed
  • C.Decision speed
  • D.Take-off safety speed

Answer: A

Correct answer: Ground minimum control speed

Minimum control speed on the ground, \( V_{MCG} \), is the lowest speed at which, following a sudden engine failure, the take-off can be continued using aerodynamic controls alone - rudder, without nosewheel steering.

Steering is excluded deliberately, because the runway may be wet or contaminated and the nosewheel's grip cannot be relied on. Rotation speed and take-off safety speed are performance speeds set by lift and climb requirements, and decision speed \( V_1 \) is the go or stop point, which must itself be no lower than \( V_{MCG} \).

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