Douglas VC-118A Liftmaster
The C-118 is a militarized version of the Douglas DC-6 airliner. Just over 100 C-118s were acquired for use by the Air Force as passenger and cargo transports. The main difference between the military and civil versions is the installation of a large cargo door on the left side of the aircraft. The C-118s were used primarily as passenger aircraft and several eventually served in the Presidential fleet. This aircraft served as the official Air Force One for Presidents Kennedy and Johnson. It was the last propeller driven aircraft to be designated as the primary Presidential transport. The VC-118A was overshadowed during its service by the introduction of the first Boeing VC-137s. Both Presidents preferred to travel in the larger, faster jet aircraft and the VC-118 was used primarily for short trips to airports that were too small for the big Boeings. Once the VC-137 became the primary Presidential aircraft the VC-118 was used as a back up plane and to transport lower ranking VIPs.