Answer :
Final answer:
Aircraft should hold clear of the manoeuvring area when there are no marked holding positions for entering an active runway.
Explanation:
The question pertains to the procedures for aircraft waiting to enter an active runway in the absence of specifically designated taxiway holding positions. When there are no marked holding positions for a runway, it is a standard procedure for an aircraft to hold in a position where it is clear of the manoeuvring area. Typically, the aircraft should be held at a point where it does not interfere with other aircraft or vehicles that are operating on the taxiway and manoeuvring area.