In 1972, the Army conducted an evaluation between the Bell Model 309 KingCobra, the Lockheed Cheyenne and Sikorsky S-67 in a competitive fly-off, beginning in the spring of 1972 and was completed in July.
The fly-off began in the spring of 1972 and was completed in July. In 1972, the Army conducted an evaluation between the Bell Model 309 KingCobra, the Lockheed Cheyenne, and the Sikorsky S-67 in a competitive fly-off.
In 1972, the Army conducted an evaluation between the Bell Model 309 KingCobra, the Lockheed Cheyenne, and the Sikorsky S-67 in a competitive fly-off. The fly-off began in the spring of 1972 and was completed in July.
In 1972, the Army conducted an evaluation between the Bell Model 309 KingCobra, the Lockheed Cheyenne, and the Sikorsky S-67 in a competitive fly-off. The fly-off began in the spring of 1972 and was completed in July.