The Collaborative International Dictionary of English v.0.48:

Airwoman \Air"wom`an\, n.
   A woman who ascends or flies in an aircraft; a woman aviator;
   a woman airplane pilot or balloonist; an aviatrix.

   Syn: aviatrix, aviatress
        [Webster 1913 Suppl. +PJC + WordNet 1.5]

WordNet (r) 3.0 (2006):

airwoman
    n 1: a woman aviator [syn: aviatrix, airwoman, aviatress]