Dáil Éireann Debate, Tuesday - 15 June 2004
457 Mr. P. Breen asked the Minister for Transport if the red zones designated by his Department at Dublin Airport in 1968 were three-dimensional surfaces in the sky or two-dimensional surfaces on the ground; and if he will make a statement on the matter. [17375/04]
View answerIn so far as the zones are used for the protection of the public on the ground, they are two-dimensional surfaces on the ground, and they are known generally as red zones. In so far as the zones are used for the protection of safe navigation of aircraft, they are three-dimensional surfaces in the sky and are known as obstacle clearance surfaces.
