By 1962 HT-8 was using the HSS-1 Seabat along with the Chickasaws and Sioux helicopters. In September 1962 the Navy adopted the 1962 United States Tri-Service aircraft designation system and the HO4S and HRS Chickasaw became the CH-19E Chickasaw, the HTL Sioux became the TH-13M Sioux and the HSS-1 Seabat became the SH-34G Seabat. Also in 1962 HT-8 simultaneously designated its first student as a Naval Aviator and a Helicopter Pilot. Prior to that all training had been transitioning fixed wing aviators to fly helicopters. Helicopters used in the decade from 1962 to 1972 were the UH-34J Seahorse, a number of UH-1D Iroquois borrowed from the U. S. Army and beginning in 1968 a new helicopter designated the TH-57A Sea Ranger which was a variant of the popular commercial Bell 206 Jet Ranger. By the end of 1969 the Army's UH-1Ds were being replaced by Navy procured TH-1L Iroquois. By the early 70s the Seahorse was gone and HT-8 had reduced down to the TH-57A for basic training and the TH-1L for advanced training.