COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Radio Communication and Navigation Equipment
AD/RAD/21 Instrument Landing Systems (ILS) Instrumentation 3/69
Applicability: Airborne ILS installations completed or modified after 15 April 1969.
Requirement: Localiser and Glideslope information displayed simultaneously on any one indicator shall always relate to the same Instrument Landing System.
Compliance: Before 15 April 1969.