Keywords: XA4D-1 137812 NAN9-54.jpg The Douglas XA4D-1 prototype USN Bureau number 137812 first of 2 960 Skyhawk fighter-bombers It first flew on 22 June 1954 U S Navy Naval Aviation News September 1954 http //www history navy mil/nan/backissues/1950s/1954/sep54 pdf 1954 USN PD-USGov-Military-Navy A-4A Skyhawk |