I have the honor of having flown on the original AA
747-123 (did it JFK
back in the 70s) and one of the CO
in the early 90s).
Was just a kid for the AA
flight, so don't remember too much other than the plane was BIG. As for the CO
flight, my recollection was that the entire back coach cabin was pretty much empty, except for me, 1 or 2 other pax and the flight attendants. Was almost like my own private 747 on that trip!