I just received a request for help and, although I can't assist this person, I thought I'd pass the information on to the Forum. The guy lives in France and runs a Web site devoted to (French) game shows which used a helicopter as their central gimmick, specifically:
(1) La chasse aux trésors, starring Philippe de Dieuleveult
(2) La carte au trésor, starring Sylvain Augier
(3) Les trésors du monde, starring Patrick Chêne and Nathalie Simon
He's looking for all sorts of documents and data: airdates, networks, videotape, pictures, newspaper articles, personal notes, etc. He's also on the lookout for personal accounts from past contestants; he's willing to contact offline folks via snail mail, too.
The URL is
http://www.chassetresor.fr.st and his email address is chassetresor@ifrance.com .