41. Between August 1945 and January 1946, the airfield was home to No . 10 Air Navigation School. 42. Traditional air navigation uses ground-based radar beacons that let pilots and air-traffic controllers track a jetliner's location. 43. GPS receivers used in air navigation have databases which contain named waypoints, radio navigation aids, airports and heliports. 44. The airline was established as the national carrier under the Air Navigation and Transport Act ( 1936 ). 45. During this period he wrote a series of engineering books covering internal combustion, road transport and air navigation . 46. His knowledge of air navigation put him in demand with pilots in the late 1920s and early 1930s. 47. The A6 is an alliance of some of the main European Air Navigation Service Providers ( ANSPs ). 48. In 1960 the staging detachment was changed from a fighter to a TACAN ( Tactical Air Navigation ) unit. 49. During World War II, he taught at Wesleyan and at the Air Navigation Flight Preparatory School in Middletown, Conn. 50. The Department of Commerce improved aeronautical radio communications, and introduced radio beacons as an effective aid to air navigation .
