 In 1977, to commemorate its 50th birthday, Pan Am organized Flight 50, a round-the-world flight from San Francisco to San Francisco, this time over the North Pole and the South Pole with stops in London Heathrow, Cape Town and Auckland.747SP-21 "Clipper New Horizons" was the former "Liberty Bell", making the plane the only one to go around the globe over the Equator and the poles.The flight made it in 54 hours, 7 minutes, and 12 seconds, creating seven new world records certified by the FAI.