 It was abandoned after World War II, but reinstated as a civilian airport in 1978 to support the Shetland oil industry, and the Sullom Voe oil terminal in particular., Scatsta is the sixth largest airport in Scotland, ranked by international passengers.This classification may be on the basis of helicopter flights to and from oil rigs in the Norwegian and/or Faroes sectors of the North Atlantic/North Sea oil region, or some classification of flights to foreign-registered (though UK-crewed and serviced) oil rigs as being "foreign" destinations.