"Mortimer Schnerd, RN" mschnerdatcarolina.rr.com wrote in message
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I'd say both were appropriate. The AC asked; the controller answered; the
AC wasn't sure whether he heard "four" or "forty" (although it should have
been painfully obvious), and so the controller clarified his original
answer.


If there had been 40 knots of wind it would have been issued as "four zero",
not "forty".