# The Air Navigation Order 2016, Paragraph 9: Operations under Visual Flight Rules — flight and navigational instruments and associated equipment – aeroplanes


(1) Aeroplanes operated under Visual Flight Rules by day must be equipped with a means of measuring and displaying the—
(a) magnetic heading;
(b) time, in hours, minutes and seconds;
(c) pressure altitude;
(d) indicated airspeed; and
(e) Mach number, whenever speed limitations are expressed in terms of Mach number.
(2) Aeroplanes operated under visual meteorological conditions at night must, in addition to the requirements of sub-paragraph (1), be equipped with—
(a) a means of measuring and displaying—
(i) turn and slip; or
(ii) attitude and stabilised heading; and
(b) where gyroscopic instruments are installed, a means of indicating when the supply of power to those instruments is not adequate.

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Source: https://www.legislation.gov.uk/uksi/2016/765/schedule/5/paragraph/9 (the official version)
Page: https://openlegislation.uk/air-navigation-order-2016/schedule-5/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.