Which state-owned entity operates Norway's second-busiest airport, located just south of Grimstadfjorden?
Grimstadfjord Grimstadfjord or Grimstadfjorden is a small fjord in the municipality of Bergen in Hordaland county, Norway. The 4 km long fjord lies on the western side of the Bergen Peninsula, and it divides the Laksevåg and Ytrebygda boroughs of the city of Bergen. The Grimstadfjorden lies just north of Bergen Airport, Flesland and the Norwegian naval base Haakonsvern lies on the northern shore of the fjord. The lake Nordåsvannet flows to the west into this fjord and then this fjord flows west into the large Raunefjorden. The island of Bjorøy lies at the western mouth of the Grimstadfjorden.
Notodden Airport, Tuven Notodden Airport, Tuven (Norwegian: "Notodden flyplass, Tuven" ; IATA: NTB, ICAO: ENNO ) is a municipal regional airport at Heddal in Notodden, a municipality in Telemark county, Norway. The airport is mostly used for general aviation, and has extensive sailplane activity. Bergen Air Transport operates the airport's only scheduled route, six times per week to Bergen Airport, Flesland. In 2011, the airport had 5,078 aircraft movements and 3,423 passengers. The airport has a single 1393 by runway with flight information service and instrument landing system. In connection with the airport is a water aerodrome, which uses the lake of Heddalsvatnet for take-off and landing.