Impact of shutting down en route primary radars within CONUS interior
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1993-06-01
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Edition:Final report; June 1992 - February 1993
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Abstract:The Impact on the Air Traffic Control (ATC) operations resulting from the shutdown of alt en route primary radars ; (except for ARSR-4s) within the CONUS interior will result in loss of real-time weather data and aircraft skin tracking, ; over 33 percent primary surveillance loss of coverage in the CONUS, and an increase in the accident rate of one accident ; In 11 years as predicted on recent statistics. ; The report ccncludes that real-time weather data, while of limited quality, must be retained until it can be replaced by ; data from the NEXRAD weather radar or other weather data source. Ability to track non-transponder equipped aircraft is ; significant but less critical and can be minimized by other system improvements. These include: better beacon radar ; (Mode S) in combination with Traffic Atert and Collision Avoidance System (TCAS) and Automatic Dependent Surveillance ; (ADS); increased transponder equipage; reduced attitude for non-transponder equipped aircraft to 10 thousand feet; ; increased DF network to 370 sites; and better siting of beacon-only antennas. ; Based on current availability, projections (derived from Capital Investment Plan (CIP) schedules), the most feasible en ; route primary radar shutdown date is the year 2008. If weather data from external sources can be made available on ; controllers' displays before that time (for exemple, by 1998 when ISSS is installed), that data can be advanced.
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Main Document Checksum:urn:sha256:57de0cf39def1fa559ec86642b83d8bea9846333b27c2f36e5e36355117a670c