Display Status This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Beginning in the 1930s, visual guidelines for navigation were replaced by the four-course radio range station system. The radio range station emitted a directional signal, forming four beacons aligned with a compass, each defining a course. Pilots listened to the radio receiver and followed the radio beams from station to station along a particular route. This system had a total of 378 stations before becoming phased out during the 1950s




United States. Civil Aeronautics Authority


bulk 1940


Barbara Walsh, Gift, 2004


0.12 Cubic feet ((1 flat box))


No restrictions on access.


Collection descriptions

Archival materials


Scope and Contents

This collection consists of sixteen charts that were part of the production process for four-course radio range routings. As the routings shown are outside of the original airway system developed in 1930, it is assumed that these charts represent a substantive expansion of the airway system, rather than a simple updating of existing infrastructure. The following areas are represented in Texas, Mississippi, Alabama, Florida and Louisiana: Big Spring; Corpus Christi; Abilene; El Paso; Dallas, Ft. Worth, San Antonio; Fort Worth; San Antonio; Houston; Birmingham; Tampa; Atlanta; Miami; Mobile; Jacksonville; Shreveport; and New Orleans.




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Topics Navigation (Aeronautics)
Aeronautics, Commercial


Southern Four-Course Radio Range Charts, Accession 2005-0001, National Air and Space Museum, Smithsonian Institution.

Archival Repository

National Air and Space Museum Archives

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