CAF

I'd like to get some sounds for aircraft. Seemingly simple matter to download some from wherever, but so few files are available that are of good quality, much less tailor to a specific plane. The next solution would be to record some myself, this is of course a more complicated task, for the obvious lack of operational World War II aircraft around. However another obstacle I've been thinking about, is would an organisation like the CAF even let me record their aircraft? Although it's understandable if they wouldn't, last thing they need is some kid screwing up their already hard to maintain aircraft. This doesn't look good. :-/ Is it possible?