Discussion
Consider the following statements about minimum control speeds:
1. The ground speed is established without nosewheel steering.
2. The air speed may be established with a small bank towards the live engine.
3. Both are the same as the stalling speed.
Which of the statements given above is or are correct?
Answer: D
Correct answer: 1 and 2 only
The first two state the certification conditions correctly. \( V_{MCG} \) is established without nosewheel steering, since a contaminated runway may offer little cornering force; and \( V_{MCA} \) may be established with a small bank towards the live engine, typically up to five degrees, which lets a component of weight assist the rudder.
The third is wrong and confuses two different limits. Minimum control speeds are control limits set by rudder authority against asymmetric thrust; the stalling speed is a lift limit set by the wing. Certification in fact requires the control speeds and the stall to be separated by a margin.
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