SPO.SPEC.MCF.125 Crew composition and persons on board
(a) The operator shall establish procedures to identify the need for additional task specialists.
(b) For a ‘Level A’ maintenance check flight, the operator shall define in its manual the policy for other persons on board.
(c) For a ‘Level A’ maintenance check flight, a task specialist or additional pilot is required in the flight crew compartment to assist the flight crew members, unless the aircraft configuration does not permit it or the operator can justify, considering the flight crew members workload based on the flight programme, that the flight crew members does not require additional assistance.