Then with his qualifications and experience he will be well placed to advise Air France on what actions his former employers took after the 747 incident out of LAX - the one that declared a mayday going into EGCC as they didn't understand the fuel system and the cross feed checklists had been changed - won't comment on the FAA threatening to ban them from USA airspace.
Also the point in the 777 accident with the post crash fuel loss - again checklist failure.