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What is the surveillance range of a general TCAS system?(a) 30 sec(b) 20 min(c) 2 min(d) 4 minThis question was posed to me in an interview.This question is from Traffic Alert, Collision Avoidance System & Weather Radar topic in division Surveillance Systems, Mapping and Multimode Radars of Avionics

Answer»

The correct option is (d) 4 min

The best I can EXPLAIN: The range of a GENERAL TCAS system is around 4 MINUTES before collision. At 45 seconds before collision TCAS gives traffic advisory and at 25 seconds before collision provides resolution advisory.



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