# The Rules of the Air Regulations 2015, Paragraph 16: Airships by day

Extent: E+W+S+N.I.

(1) An airship flying during the day in any of the circumstances referred to in paragraph (2) must display two black balls suspended below the control car so that one is at least 4 metres above the other and at least 8 metres below the control car.
(2) The circumstances are that—
(a) the airship is not under command;
(b) the airship has voluntarily stopped its engines; or
(c) the airship is being towed.
(3) For the purposes of this rule an airship is not under command when it is unable to execute a manoeuvre which it may be required to execute by these Rules.

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Source: https://www.legislation.gov.uk/uksi/2015/840/schedule/1/paragraph/16 (the official version)
Page: https://openlegislation.uk/rules-of-the-air-regulations-2015/schedule-1/paragraph-16
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.