The TA-4J Skyhawk is a two-seat lightweight high performance aircraft with a modified delta wing manufactured by the Douglas Aircraft Company of Long Beach CA. The TA-4J s maiden flight was on December 17 1968 and first entered service in the mid-1969. TA-4J deliveries were supplemented by conversion of numerous TA-4Fs to the “J” designation through removal of ordnance system components. In 1968 a contract was let to produce the TA-4J a trainer version of the TA-4F. The TA-4J Skyhawk differed from the TA-4F through the removal of tactical weapons system and aerial tanker components and the installation of the J52-P6 engien instead of the higher rated engine J52-P8. The TA-4J is primarily used for training and various other contract duties such as Electronic Warfare Adversary and Threat Simulation. A total of 277 TA-4Js were built.