Composition of flight crew
129.—(1)  Subject to paragraph (2), for every flight of a relevant aircraft, the AOC holder must ensure that —
(a)the number and composition of the assigned flight crew is not less than the requirements specified in the AOC holder’s Operations Manual; and
(b)the assigned flight crew includes flight crew members in addition to the minimum number specified in the aircraft flight manual or other documents associated with the aircraft’s Certificate of Airworthiness, when necessitated by considerations related to —
(i)the aircraft type used;
(ii)the type of operation involved; and
(iii)the duration of flight between points where flight crews are changed.
(2)  An AOC holder must not operate any relevant aircraft with a single pilot for a flight in accordance with the Instrument Flight Rules or at night unless the use of a single pilot is approved by the Director‑General of Civil Aviation.