Approach control radar used to detect and display an aircraft’s position in the terminal area. ASR provides range and azimuth information but does not provide elevation data. Coverage of the ASR can extend up to 60 miles.

Listed in the Pilot/Controller Glossary as a cross-reference to AIRPORT SURVEILLANCE RADAR, whose text is shown above.

Source FAA Pilot/Controller Glossary↗ · checked 2026-08-25