Stephen
Nice idea, but how will you get the airlines to fill in your questionaire? They will answer questions from a respected body like GAPAN, but a question paper from an individual? Not being harsh, but I don't see them replying.
Good luck however.
PP
ps, forgot to add that even with the GAPAN survey which has been discussed before on these pages, they answer the survey with what they want in the 'ideal world', but in reality accept a much broader swathe of individuals and skills and qualifications. So even if they do reply it is very hard to claim it as definitive.