I used to fly on Air Inter a lot in the 90's and I'm pretty sure that i flew on a Mercure between Paris Orly and Avignon and return in 93 or 94, but to my enthusiast shame the memory isn't clear, only that the airport was restricted to the size of aircraft that could land there. If anyone's interested there's one apiece at the Le Bourget and Speyer museums to wander around. A shame that this aircraft didn't have success, a bit like the story of the HS Trident.