# The Rules of the Air Regulations 1991, Paragraph 19: Right-hand traffic rule


An aircraft which is flying within the United Kingdom in sight of the ground and following a road, railway, canal or coastline, or any other line of landmarks, shall keep such line of landmarks on its left:
Provided that this rule shall not apply to an aircraft flying within controlled airspace in accordance with instructions given by the appropriate air traffic control unit.

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Source: https://www.legislation.gov.uk/uksi/1991/2437/schedule/crossheading/general-flight-rulesn2/paragraph/19 (the official version)
Page: https://openlegislation.uk/rules-of-the-air-regulations-1991/schedule/crossheading-general-flight-rulesn2/paragraph-19
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.