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How many ILS systems does an airport require?(a) 0(b) 1(c) Depends upon aircraft size(d) Depends upon density of traffic on the airspaceI have been asked this question during an interview.Origin of the question is Instrument Landing Systems in portion Landing Systems & Air-Traffic Management of Avionics

Answer»

The CORRECT option is (d) Depends upon density of traffic on the airspace

For explanation: High density AIRPORTS where a lots of planes land and take off typically have more than one runways with MULTIPLE ILS systems. Chicago’s O’Hare airport had an ILS installed on 12 runways in 1996.



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