CAT.IDE.H.105 Minimum equipment for flight

A flight shall not be commenced when any of the helicopter’s instruments, items of equipment or functions required for the intended flight are inoperative or missing, unless:

(a) the helicopter is operated in accordance with the operator’s MEL; or

(b) the operator is approved by the CAA to operate the helicopter within the constraints of the MMEL in accordance with point ORO.MLR.105(j) of Annex III.