AC 90-50D - Requirements for 760-Channel VHF Radio for Aeronautical Operations
Requirements for 760-Channel VHF Radio for Aeronautical Operations
Office of Primary Responsibility
Encourages aircraft owners to upgrade their air-ground radio communication systems. Describes and upgrades civil air traffic control frequencies in the very high frequency (118.000 to 136.975 MHz) band. The 136.000 to 136.975 MHz band became available for aeronautical use on January 1, 1990.