# The Air Navigation Order 2016, Paragraph 12: Operations under Instrument Flight Rules — flight and navigational instruments and associated equipment – helicopters and gyroplanes


Helicopters and gyroplanes operated under Instrument Flight Rules must be equipped with a means of—
(a) measuring and displaying the—
(i) magnetic heading;
(ii) time in hours, minutes and seconds;
(iii) pressure altitude;
(iv) indicated airspeed;
(v) vertical speed;
(vi) slip;
(vii) attitude;
(viii) stabilised heading; and
(ix) outside air temperature;
(b) where gyroscopic instruments are installed, indicating when the supply of power to those instruments is not adequate;
(c) preventing malfunction of the airspeed indicating system required in paragraph (a)(iv) due to condensation or icing; and
(d) as a standby instrument, an additional means of measuring and displaying attitude.

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Source: https://www.legislation.gov.uk/uksi/2016/765/schedule/5/paragraph/12 (the official version)
Page: https://openlegislation.uk/air-navigation-order-2016/schedule-5/paragraph-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.