I quite agree with the first point, but see no issue in the second: the "immatriculation" is the "registration", 22IS in the example. It does go with the airframe. @PC rightly states that F-J(ghi) is the callsign, not the registration. That the callsign goes with the owner of the radio license is new to me. But the idea has some merit, as many microlight pilots use a handheld radio that they carry from one plane to another.
Et pour la petite histoire: at one time there was an idea to have something similar in Belgium, but it never really worked out. I recall being puzzled by seeing OQ-(a-z)(a-z)(a-z) on a microlight, I vaguely remember it was a scarlet red Rans S5 single seater.
Last edited by Jan Olieslagers; 31st Jul 2018 at 20:19.