This somewhat shows what multi- and single-engine machines used on IFR flights. Position reports to the CAA were made using fixes over
the Low Frequency radio stations or intersections of radio legs. It was before radar and transponders were used to track aircraft.
1949 Nav chart from VR 31, ferry squadron in Norfolk
Low freq radio range with the aural null over the center tower with 4 legs to navigate on.
Tower has a powerful rotating lighted beacon placed along the GARB airways for night XC
The GARB Airways over the US before the FAA replaced the CAA
Green, Amber Red and Blue airways used in the early days of radio nav.
Nav chart showing the let down leg to the west of the radio towers at NAS Chincoteague
A let down plate showing how to make a Low Frequency approach riding the beam.
Using GCA was a blessing compared to making a radio range approach at night, in IFR conditions.