VP-HL-1 was a Heavy Patrol Squadron (Landplane) of the U.S. Navy. The squadron was established as Bombing Squadron 116 (VB-116) on 1 December 1943, redesignated Patrol Bombing Squadron 116 (VPB-116) on 1 October 1944, redesignated Patrol Squadron 116 (VP-116) on 15 May 1946, redesignated Heavy Patrol Squadron (Landplane) 1 (VP-HL-1) on 15 November 1946 and disestablished on 22 May 1947.
Landplane is two words but the US Navy nixed the space between the two words.
Landplane is not a word, so the words would have been land and plane, and the US Navy saw fit to remove the space for the code name. The system may have missed the need for the space in most cases and the fact that the US Navy is responsible for the name.