... and a hint about HD-21 ?.
I wonder if there are better quality drawings of the SAHD-120; it would be so much fun to convert a Transall model kit into one?Teamed with Sud Aviation Hurel-Dubois perhaps came quite near a
real production contract with the SAHD-120, as a contender for a
tactical transport, that eventually saw the Transall as the winner.
The SAHD 120 looks like a Transall with a typical HD-wing.