In the late 1970s and into the early 1980s, the airport became Pan Am's principal African hub, with a nonstop Boeing 747 service from New York JFK connecting at Robertsfield to such destinations as Dakar, Accra, Abidjan, Lagos, and Conakry, among others, and continuing on to Nairobi and even at times Johannesburg, so that for many years virtually every Pan Am passenger to Africa passed through Robertsfield. Pan Am's presence diminished during the 1980s, as Pan Am's African network was slowly pulled down. Pan Am ended its management of the airport in 1985 but as late as 1986 the airport was still a stop on the JFK-Dakar-Monrovia-Lagos-Nairobi route. By 1987, Pan Am was no longer serving Monrovia at all.