Sabena a lesser number of smaller Fokker VIIA and 14 Handley-Page types. It also flew British Westland Wessex aircraft. Sabena occasionally flew to tropical Africa, Belgium's Congo colony, but mostly these aircraft were shipped out. There was no direct flight yet between Belgium and the colony. As the 1930s progressed, Sabena cooperated with Air France and Deutsche Luft Hansa, which also had interests in routes to destinations across Africa. Sabena's first long-haul flight to the Congo occurred on 12 February 1935 and took five and a half days, for which Sabena used a Fokker F-VII/3m aircraft. The following year, Sabena purchased
Alcazar (airline) Sabena. In addition, they had a strong tie with Northwest Airlines. In 1989, KLM bought 20 percent of the then ailing airline. In 1992, KLM had made a bailout purchase of Northwest, securing a 25 percent ownership of the airline, which is the maximum a foreign airline is allowed to own in a US airline. Swissair cooperated with Delta Air Lines and Singapore Airlines in a triangular cooperation, which was highly valued by the company's management. Delta was significantly larger than the other two US partner airlines, and had a base in New York City, rather than Northwest's hubs in