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air route surveillance radar [ˈɛе 'ru:t ,sə:'veɪl(ə)ns 'reɪda:]
avia., amer.	An air route traffic control center ARTCC radar used primarily to detect and display an aircraft’s position while en route between terminal areas. The ARSR enables controllers to provide radar ATC service when aircraft are within the ARSR coverage. In some instances, ARSR may enable an ARTCC to provide terminal radar services similar to but usually more limited than those provided by a radar approach control.

air-route: 30 phrases in 10 subjects

Airports and air traffic control	2
Aviation	8
Commerce	4
Economy	1
General	5
ICAO	1
Law	1
Meteorology	2
Military	4
Technology	2