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Old 11th Nov 2011, 21:37
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john_tullamarine
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.. and, I would hope, the Contractor's pilots would have been mindful of that significance on occasions when the takeoff were to be performed in strong crosswind conditions.

The nature of the yawing moment as the real Vmcg is approached is that the gradient steepens VERY rapidly in the closest few knots.

Get caught out with this one and the situation might become irrecoverable VERY rapidly.

Then, why don't we see aircraft running off the side of runways every day of the week ?

(a) most takeoffs are with a speed schedule well above Vmc limiting speeds

(b) the conjunction of limiting takeoff with failure and strong crosswind is rare

(c) engine reliability is such that the probability of a failure in such circumstances is rare.

Just don't get caught out in circumstances where the speed selection was optional - ferry flight, for instance.
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