The H-5 was the RCAF's first helicopter. The first three were delivered in 1947, with four more following, two in 1948 and two in 1949. Bought for Search and Rescue, the type was also used to train a helicopter force from the ground up. The S-51s (as they were better known by the crews) were in service until the 1960s when parts were getting scarce and more modern helicopters had joined the RCAF. 9603 was sold to the Alberta Institute of Technology in 1964 as a training aid, later going to the American Helicopter Museum & Education Center where it remains on display.

This E-2 was delivered in Jan. 1989 and served with VAW-78 & -110 before being transferred to VAW-115 in 1994. She was then shore based at NAF Atsugi, Japan and did three tours of duty aboard USS Independence before retirement in 1998 and arriving at the Yanks Air Museum for restoration and display in 2001.

Operated by Heavy Attack Squadron RVAH-1 "Tigers" based on USS America CVA-66 during a visit to UK waters.