growing market for executive charters using smaller twin-prop aircraft. Although slightly slower, they were significantly more economical that corporate jets. Paralift was able to operate many routes cheaper than scheduled services given that the entire aircraft was filled up. In addition, nonstop flights were available on any conceivable route combination, unlike scheduled services. Paralift was therefore successful at targeting smaller groups of executives traveling as a group. Paralift operated out of Oslo Airport, Fornebu. It subcontracted maintenance to Fred. Olsen Airtransport and catering to Scandinavian Airlines System. For the business charter market the airline bought a Cessna 310 in 1970, a Cessna 320 and Cessna 401 in 1972. The Cessna 310 was replaced with a Cessna 402 in 1975. The Cessna 320 was sold in 1976 and replaced with the airline's first Piper PA-31 Navajo. Within three years Paralift was operating five such aircraft, and had also bought a Piper PA-31T Cheyenne and a Cessna 404 Titan. Partnair operations Sometime between 1975 and 1977 the airline changed its name to Partnair. It saw increased business particularly from the booming oil industry. By 1977 the airline was the second-largest light twin-prop operator in the country. The airline flew 5,200 hours with its five aircraft in 1978. The Cheyenne was retired in 1980, replaced by a new Cheyenne a year later which remained in use until 1985. The first Beechcraft King Air 100 was delivered in 1978, followed by a second in 1980. That year Partnair also took delivery of its first Beechcraft Super King Air 200. The airline gradually ordered more of these until operating six Super King Airs. A British Aerospace Jetstream 31 was ordered in July 1981, along with a further option, for delivery in October 1982. However, the order was canceled before delivery. Instead, Partnair took delivery of two used Cessna 550 Citation II corporate jets, but these were retired within a year. Partnair started using simulators to train their pilots from 1982. The shipping company Tenvig bought the airline in 1983. In the following three years, they invested 43 million kroner in the company. From 15 May 1984 the former military terminal at Fornebu was converted into an executive terminal, named Terminal 2. In addition to Partnair moving its flights there, it signed a two-year contract to operate the terminal on behalf of the Civil Aviation Administration. Partnair bought Nor-Fly Charter in September 1984. Nor-Fly operated two