Not sure if this is the best sub-forum but I was not sure if hardware was more adequate.
Anyway, after seeing trooper's thread
I took a look for Amiga on a French local ads site and stumbled upon someone selling a a flight simulation system made by a company called Alpha Kilo.
It seems to be some custom hardware gathered together and a A500 is used for the software part:
I have made a copy of the seller most important picture:
Well, I never had much interest for flight sims (except Gunship 2000 but that's a bit different) so I don't know if this was just some usual hardware components and that company just sold a French version of those.
But in case it is some genuine custom stuff, I thought some people here might be interested in seeing that.
I guess I can try and ask some questions to the seller if some people want to know more (no reply guaranteed though and there is a chance that it is already sold).