AUGUST 30--The Air Coordinating Committee approved a common military-civil short-range air navigation Asystem called VORTAC. This system consisted of a combination of the Navy developed TACAN (Tactical Air Navigation System) with the Civil Aeronautic Authority's VOR (Very High Frequency Omnirange direction finder). The Air Coordinating Committee action resulted in the installation of ground beacons on the civil airways that served both civil and military aircraft, each using their own specialized equipment.