Slasher, the Argosy was just ahead of it's time. Satellites use the curvature of the earth to maintain level flight, falling but maintaining "level" flight at the same time, neat trick!
Armstrong Whitworth were truly world leaders!
John_T, interested to know which aircraft had 5th segment data provided in the AFM. I routinely build 5th segment into RTOWs and OEISIDs from "base" data, interested to know if you or other good folk like
Mutt do the same thing.
Regards,
Old Smokey