1200. Operator's duties as to crew fatigue.

The operator1 of an aircraft registered in the United Kingdom2 which is3:


    (1)     flying on a public transport flight4;


    (2)     operated by the holder of a national air operator's certificate5;


    (3)     a helicopter flying on a commercial air transport operation6; or


    (4)     an aeroplane with a flight crew7 of one pilot flying for the purpose of commercial air transport8,

may not cause or permit that aircraft to make a flight unless9 he has established a scheme for the regulation of flight times for every person flying in that aircraft as a member of its crew10. The scheme must be approved