Boeing had initially created the B-747sp (hot rod) variation per Braniff request, so that they could comfortably operate into / out of Bogotá and Quito.
Hmm, did not know that.
I thought the SP was a super long-haul version with 18 hours fuel...?
I flew -200s in and out of Quito many times since 2005. Usually approached at night @ max -landing weight..No problems, but one has to be gentle on the brakes, otherwise they heat up and blow tires...Not good.