 When production ended in 1946 it was replaced by the improved L-649 and L-749 Constellation.In June 1939, Howard Hughes, the owner of Transcontinental & Western Air (later called Trans World Airlines and abbreviated TWA for short), prepared a meeting at his Hancock Park residence in California.Jack Frye (then president of TWA) attended along with three executives from the Lockheed Aircraft Corporation which included designer Clarence "Kelly" Johnson.