Those purposes are - to provide an airport to carriers of passengers or goods by air; and to provide a port or other terminal facilities to carriers of passengers or goods by sea or inland waterway.
Hediadau masnachol yw awyrennau sy’n cael eu defnyddio i gludo teithwyr neu nwyddau ar delerau masnachol, yn ogystal â lleoli hediadau a symudiadau lleol.