# The Air Navigation Order 2016, Paragraph 4


(1) “Microlight aeroplane” means an aircraft described in sub-paragraph (2), (3), (4) or (5).
(2) An aircraft is a microlight aeroplane if it is a non-Part 21 aircraft, other than an unmanned aircraft, that is designed to carry not more than two persons, which—
(a) has a stalling speed, or maximum steady flight speed in the landing configuration, at the maximum take-off mass not exceeding 35 knots calibrated airspeed; and
(b) has a maximum take-off mass not exceeding—
(i) 450kg for a two-seat landplane;
(ii) 495kg for a two-seat amphibian or floatplane; or
(iii) 475kg for a two-seat landplane equipped with an airframe mounted total recovery parachute system.
(3) An aircraft is a microlight aeroplane if it is a non-Part 21 aircraft, other than an unmanned aircraft, that is designed to carry not more than two persons, which—
(a) is of an approved design;
(b) either has, or has been subsequently modified to have, a stalling speed, or minimum steady flight speed in the landing configuration, at the maximum take-off mass not exceeding 45 knots calibrated airspeed; and
(c) either has, or has been subsequently modified to have, a maximum take-off mass not exceeding—
(i) 600kg for a landplane; or
(ii) 650kg for an amphibian or floatplane.
(4) An aircraft is a microlight aeroplane if it is a single-seat deregulated aeroplane.
(5) An aircraft is a microlight aeroplane if it is being flown, or is intended to be flown, for the purpose of a flight test to establish that it complies with the requirements of sub-paragraph (2), (3) or (4).
(6) For the purposes of sub-paragraph (3)(a), an “approved design” is a design which is approved by the CAA for the purposes of the issue of a permit to fly under article 40.

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Source: https://www.legislation.gov.uk/uksi/2016/765/schedule/1/paragraph/4 (the official version)
Page: https://openlegislation.uk/air-navigation-order-2016/schedule-1/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.