Summary and Key Points You Need to Know: The Douglas A-4 Skyhawk, developed in the 1950s ... but production models, A-4D-ls (A-4As), used 7,700 lb.-thrust J65-W-4 engines. The first Skyhawks ...
More importantly, the Skyhawk could carry a heavy armament load considering its relatively light weight. Early models of the A-4 Skyhawk came with two 20mm cannons. These systems were ultimately ...