MM43... PH Nargeolet was referenced in French as the leader of the Seabed Worker search in the Search Operations Video you kindly linked many of us to earlier today. Curiously, PH was the chief pilot from 1986 to 1996 of the French mini-submarine
Nautile and he recovered 10 black boxes during his
Nautile career. I suppose he could be called a professional pilot, albeit a wet one....
see
Titanic-Titanic.com • View topic - Air France Black Box Seeking Sub Is Titanic Veteran