The A-4 Skyhawk was designed by Douglas in response to a U.S. Navy call for a jet-powered attack aircraft to replace the older A-1 Skyraider. Douglas opted for a design that would minimize its size, weight, and complexity. The result was an aircraft that weighed only half of the Navy's weight specification. It had a wing so compact that it did not need to be folded for carrier stowage.
A-4F refinement of A-4E with extra avionics housed in a hump on the fuselage spine (this feature later retrofitted to A-4Es and some A-4Cs) and more powerful J52-P-8A engine with 9,300 lbf (41 kN) of thrust, later upgraded in service to J52-P-408 with 11,200 lbf (50 kN), 147 built. Some served with Blue Angels acrobatic team from 1973 to 1986
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