seasonal, scheduled services between Gatwick, Clermont-Ferrand and Montpellier, as well as on its year-round Luton–Leeds–Glasgow schedule, the first time the airline had used jets on scheduled services. The turboprop capacity released enabled re-introduction of scheduled services between Bristol, Cardiff and Amsterdam, as well as the launch of direct scheduled services between Newcastle and the Isle of Man. During April that year, Dan-Air launched a year-round, same-day-return Gatwick–Newcastle jet schedule, the airline's first UK mainland domestic feeder route from Gatwick. This twice-daily service, promoted with British Caledonian, initially utilised Comet 4Bs. From November 1974, BAC One-Eleven 300/400s replaced Comets on one of the rotations. In May 1974, Dan-Air launched a twice-daily Gatwick–Ostend HS 748 service in conjunction with Sabena. One of the two daily round-trips was operated under Sabena flight numbers. In 1975, Dan-Air commenced a year-round scheduled service between Newcastle and Bergen, as well as two new, seasonal scheduled routes linking the Isle of Man with Aberdeen and Gatwick. The latter was the first non-stop scheduled air service between Gatwick and the Isle of Man. Nineteen-seventy-five was also the year the airline converted its seasonal Gatwick–Bern scheduled service into a year-round operation. During that year, the company extended its seasonal scheduled service between Gatwick and Clermont-Ferrand to Perpignan, and introduced One-Eleven jets on its seasonal, Gatwick–Jersey schedule. Nineteen seventy-five furthermore saw the acquisition of two former Zambia Airways One-Eleven 200s, the first time the firm had acquired jets to be exclusively operated on scheduled services. One aircraft was based at Gatwick, the other at Newcastle. Moreover, 1975 was the year Manchester became the sole stop in the Northwest on Link City. In 1976 Dan-Air commenced a year-round scheduled service between Newcastle and Stavanger. In 1977, Dan-Air launched a scheduled route from Gatwick to Strasbourg. 1978, Dan-Air's silver jubilee, saw the launch of a scheduled service linking Gatwick with Bergen. In November 1979, Dan-Air replaced British Airways as scheduled carrier between Gatwick and Aberdeen, a feeder route for the oil industry. 1979 also saw the launch of a Gatwick–Toulouse scheduled service. In April 1980, Dan-Air took over British Airways's loss-making regional services from Bristol, Cardiff and Newcastle to Belfast and Dublin, as well as from Bristol and Cardiff to Jersey, Guernsey and Paris Charles de Gaulle, and from Leeds/Bradford to Guernsey. 1981 saw Dan-Air launch a scheduled route linking Gatwick with Cork, its first scheduled service from Gatwick to Ireland, as