normal 48-hour week throughout the year introduced. of rock was blasted and, along with garbage from Oslo, used to fill in the swamps and depressions. Because of the delays, plans were changed and three runways were built, two long and one long. The airport was equipped with a control tower; administration building; a hangar with a workshop; and a service building. Docks for seaplanes were constructed about to the south, on the east shore of the peninsula. In 1934, there were three domestic airlines in Norway: Det Norske Luftfartsselskap (DNL), Norske Luftruter and Widerøe's Flyveselskap. All three applied to the state for subsidies to operate routes. DNL applied for a ten-year concession with a annual subsidy to fly Oslo–Kristiansand–Amsterdam, continuing northwards to Ålesund. Widerøe applied for NOK 265,000 per year for a three-year concession for the seaplane routes Oslo–Bergen and Bergen–Trondheim. Norske Luftruter applied for NOK 250,000 per year for a route from Bergen to Copenhagen via Kristiansand and Oslo. The following year, parliament passed a long-term plan for construction of airports, which would be located in Oslo, Telemark, Kristiansand, Stavanger, Bergen, Ålesund and Trondheim. In each case, the municipalities would have to purchase land and build the airport, but the state would reimburse 50% of the investments. Due to the high cost burden on the municipalities, only Stavanger Airport, Sola and Kristiansand Airport, Kjevik were operational by the time Fornebu opened. Opening and war The first aircraft at Fornebu was a Lufthansa Junkers Ju 52 in September 1938. It had flown a scheduled route to Kjeller, and the captain had continued to Fornebu to try the new airport. On 16 April 1939, the seaplane section came into regular use. The first seaplane was a Ju 52 operated by DNL to Copenhagen. The official opening was on 1 June 1939. The first aircraft to land after the official opening was a Douglas DC-2 operated by KLM from Amsterdam. The first departure was on the Danish airline Det Danske Luftfartsselskab, when a Focke-Wulf Fw 200 took off to Copenhagen. The captain made a mistake, and took off from the parking space instead of the runway. In addition to these two routes, Luft Hansa started flights to Germany and DNL flew to Amsterdam. During the fall, DNL also flew from Perth, Scotland, via Oslo to Stockholm, but this route was soon canceled. As part of the invasion of Norway by Nazi Germany