An operator shall not permit a person to act and no person shall act as a flight crew member of a helicopter operated under this Part unless, in addition to the recency requirements of Regulation 91.02.4, the person-
(a) holds valid licences, certificates and ratings as required by Part 61 appropriate to the assignment;
(b) meets the type and variant training and checking requirements specified in TS 128.02.3 and has otherwise fulfilled all applicable training requirements specified in TS 128.03.4.