The Air Force had a large inventory of these engines on hand for its fleet of HH-3 Jolly Green Giant rescue helicopters and using the same engine for both helicopters would save costs.
A Forza Aérea tiña un gran inventario deses motores para a súa frota dos helicópteros de rescate HH-3 Jolly Green Giant e usar o mesmo motor para ámbolos dous aparellos aforraría custos.