747-100 With The Space Shuttle
The 747 series of aircraft are four-engine intercontinental-range, swept-wing "jumbo jets" that entered commercial service in 1969.
NASA Boeing 747-100 & Space Shuttle - Manchester Airport (Taken by Michael Bailey 1983)
The SCAs are used to ferry space shuttle orbiters from landing sites back to the launch complex at the Kennedy Space Center and also to and from other locations too distant for the orbiters to be delivered by ground transportation. The orbiters are placed atop the SCAs by Mate-Demate Devices, large gantry-like structures that hoist the orbiters off the ground for post-flight servicing and then mate them with the SCAs for ferry flights.
It was a significant craft built for NASA used purely for atmospheric test flights and it never flew in space, but it was crucial to the Space Shuttle program. Enterprise was originally to be named Constitution. United States of America's President Gerald Ford requested that NASA change the name of it from Const