High Quality Content by WIKIPEDIA articles! 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 1,393-by-40-meter (4,570 by 130 ft) 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.