Nuuk Airport unable to service large airliners or flights reaching Denmark or other countries. In connection with events are chartered aircraft or VIP flights unable to reach Nuuk. A change to a small local aircraft (normally at Kangerlussuaq Airport) is always needed. A large expansion of the airport has been controversial due to the approach near the urbanized area of the outlying districts of Nuuk, although the issue continues to be a subject of internal debate in Greenland. In the early 1960s, after the establishment of Air Greenland on 7 November 1960 as Grønlandsfly, Nuuk was served exclusively by the PBY Catalina
City proper offices. These questionnaires ask for the country-specific definition of urban areas, rural areas and city proper. In its glossary, the Yearbook defines "city proper" as "a locality defined according to legal/political boundaries and an administratively recognized urban status that is usually characterized by some form of local government". In its data however, the United Nations Demographic Yearbook affords the individual countries considerable leeway over the definition of "city proper". The table titled "Population of capital cities and cities of 100 000 or more inhabitants" provides several country-specific definitions for "city proper" that diverge from the provided definition: These definitions are