Airway Navigational Facilities (ANFAC)
Supplements to each quarterly edition were distributed updating the basic information. Each new supplement consolidated all the previous supplements for that edition. New or changed information could also be found in Aeradio Notices to Airmen (ANTAs) - later internationally standardised to Notices To Airmen (NOTAMs).
In the days of ANFAC, the principal radio navigation aids were the Lorenz Range, Homer/Non Directional Beacon (NDB), and later the Visual-Aural Range (VAR). The Australian Distance Measuring Equipment (DME) started to make an appearance in the early 1950s.
ANFAC was later replaced by Radio Navigation Charts (RNCs, later En Route charts - ERCs), the Aeronautical Information Publication - Operations (AIP-OPS), and later still the En Route Supplement (ERS) and En Route Supplement Australia (ERSA).
Click here to see a typical page from the March-May 1955 ANFAC.
Typical contents of ANFAC were: