AC 20-67B, ADVISORY CIRCULAR, AIRBORNE VHF COMMUNICATIONS EQUIPMENT INSTALLATIONS (16 JAN 1986)

AC 20-67B, ADVISORY CIRCULAR, AIRBORNE VHF COMMUNICATIONS EQUIPMENT INSTALLATIONS (16 JAN 1986)., This advisory circular sets forth one means, but not the only means, of demonstrating compliance with the airworthiness rules governing the functioning of airborne VHF communications equipment.