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Flight tests establish a minimum control speed in the air of 92 knots against a stalling speed of 88 knots in the same configuration.

What does this relationship mean operationally?

  • A.The two speeds are unrelated
  • B.The aeroplane cannot be flown at all
  • C.Directional control is the binding limit
  • D.The aeroplane stalls before losing directional control

Answer: C

Control is lost before the wing stops flying, so the speed schedule must be built around the higher figure. Certification requires the relationship to be established because it determines which limitation the crew must respect.

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