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In 1963, the USAF began to study very large
logistic jet-powered transports. After reviewing several airframe
designs, they eventually choose one similar to that of the C-141A
Starlifter featuring a high-set wing, four underwing jet engines and a
T-tail. The design competition was between Boeing Model 747, Douglas
CX-4 and Lockheed L-500. Lockheed won the contract in 1965 with a design
that was an extension of the Starlifter series. Construction of the C-5
prototype began in 1966. The first C-5A Galaxy was rolled out on 2 March
1968 and prepared for initial flight trials at Lockheed's Marietta
plant. The maiden flight took place on 30 June 1968. The C-5 entered
operational service in 1970 and has been a vital asset in every military
operation since that time including Vietnam, Desert Storm and Operation
Enduring Freedom. In 1982, a new production version, the C-5B, was
authorized in which all modifications and improvements evolved in the
C-5A program were to be incorporated. With a service life that stretches
beyond 2040, the C-5 will remain a central figure in strategic airlift
for decades to come.
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