I recommend having a passenger hand holding the camera - people make really good shock mounts, and hopefully you won't have the thing fall down in the works trailing cables. When I was making low cost DV programmes for the BBC we used an adaptor to listen to ATC. It consisted of a standard arircraft listen jack, from Transair or wherever, with a 120k resistor soldered in series inside the jack. On the other end was an XLR plug to fit a standard sound cable which ran to the sound input on the camera, usually a 3.5mm jack. This worked well in various aircraft from a PA28 to a 747. A similar system using a NATO jack works in helicopters.
B