Article 170 Meaning of aerodrome traffic zoneI1
United Kingdom
Subject to paragraphs (3) and (8), the aerodrome traffic zone of a notified aerodrome that is not on an offshore installation and at which the length of the longest runway is notified as 1850 metres or less is that specified in paragraph (2).
The aerodrome traffic zone at an aerodrome referred to in paragraph (1) is the airspace extending from the surface to a height of 2000 feet above the level of the aerodrome within the area bounded by a circle centred on the notified mid-point of the longest runway and having a radius of two nautical miles.
Paragraph (4) applies if—
the aerodrome traffic zone specified in paragraph (2) would extend less than 1½ nautical miles beyond the end of a runway at the aerodrome; and
this paragraph is notified as being applicable.
The aerodrome traffic zone is that specified in paragraph (5) as though the length of the longest runway at the aerodrome were notified as greater than 1850 metres.
Subject to paragraph (8), the aerodrome traffic zone of a notified aerodrome that is not on an offshore installation and at which the length of the longest runway is notified as greater than 1850 metres is that specified in paragraph (6).
The aerodrome traffic zone is the airspace extending from the surface to a height of 2000 feet above the level of the aerodrome within the area bounded by a circle centred on the notified midpoint of the longest runway and having a radius of 2½ nautical miles.
Subject to paragraph (8), the aerodrome traffic zone of a notified aerodrome that is on an offshore installation is the airspace extending from mean sea level to 2000 feet above mean sea level and within 1½ nautical miles of the offshore installation.
The aerodrome traffic zone of a notified aerodrome excludes any airspace that is within the aerodrome traffic zone of another aerodrome that is notified for the purposes of this article as being the controlling aerodrome.