Performance applicability — aeroplanes
79.—(1)  An AOC holder must ensure that a large aeroplane that corresponds to one of the following descriptions is operated in accordance with the specified Performance Class:
(a)a multi‑engine aeroplane powered by turbo‑propeller engines with an MAPSC exceeding 9 must be operated in accordance with Performance Class A;
(b)a multi‑engine turbojet‑powered aeroplane must be operated in accordance with Performance Class A;
(c)an aeroplane powered by reciprocating engines with an MAPSC exceeding 9 must be operated in accordance with Performance Class C.
(2)  Despite paragraph (1), where full compliance with paragraph (1) is not possible due to specific design characteristics of a large aeroplane, the AOC holder may apply performance standards —
(a)that ensure a level of safety equivalent to the appropriate Performance Class; and
(b)that are approved by the Director‑General of Civil Aviation.