The path over the ground that the aircraft follows as it collects images. The flight line can be approximated by connecting the line between the PP and CPPs marked on a series of photographs.

Paths in the sky routinely taken by birds to move between roosting and feeding areas

Flightline is an airline based at Southend Airport in south east England. It supplies ad hoc and contract passenger and freight charters, as well as VIP flights, aircraft sales and maintenance services. Services are flown for many European airlines as required.

That wonderful expanse of concrete or 'tarmac' where beautiful fighter planes eagerly await their pilots to "slip the surly bonds of earth".