Marking of exits and break-in areas
83.—(1)  An AOC holder must ensure that —
(a)every exit of a large aeroplane is marked with —
(i)a universal symbolic exit sign approved by the Director‑General of Civil Aviation or the words “EXIT” or “EMERGENCY EXIT”; and
(ii)instructions in English and diagrams to indicate the correct method of opening the exit; and
(b)the markings required under sub‑paragraph (a) —
(i)are red or green in colour;
(ii)are placed on or near the inside surface of the door or other closure of the exit; and
(iii)if the exit can be opened from the outside of the aeroplane, are also placed on or near the exterior surface.
(2)  An AOC holder must ensure that every exit of a large aeroplane that is intended to be used by passengers in an emergency is marked on the exterior surface of the aeroplane by a band outlining the exit that —
(a)is not less than 5 cm in width; and
(b)is in a colour that clearly contrasts with the background on which the marking appears.
(3)  An AOC holder must ensure that every area of the aeroplane fuselage that is suitable for break‑in by rescue crews in the event of an emergency (called in this regulation a break‑in area) —
(a)is rectangular in shape;
(b)is marked on the exterior surface of the aeroplane’s fuselage by right‑angled corner markings, each arm of which is 10 cm in length along its outer edge and 3 cm in width; and
(c)is marked across the centre with the words “CUT HERE IN EMERGENCY”.
(4)  Where a break‑in area marked in accordance with paragraph (3) has corner markings that are more than 2 m apart, the AOC holder must ensure that the break‑in area is marked with intermediate lines 10 cm in length and 3 cm in width such that the distance between adjacent markings does not exceed 2 m.
(5)  An AOC holder must ensure that, apart from a marking required under paragraph (1) or (2), every marking required under this regulation —
(a)is red in colour; and
(b)in any case in which the colour of the adjacent background renders the red marking not readily visible, is outlined in white or some other contrasting colour in such a manner as to render the marking readily visible.
(6)  An AOC holder must ensure that every marking required by this regulation —
(a)is painted or affixed by other equally permanent means; and
(b)is kept clean and unobscured at all times.