I have a temporary mount for lipstick cam which rides on angle plate ... hanging on wing to body fairing (two of the sheet metal screws). Belly cam is secured by cushion clamps. It can be mounted forward or backward ... at different vertical angles. The cam power and signal wire is fed up through the flap pushrod hole... to the recording deck in the rear pit.
Sample is on YouTube, "Water Music" and at the very end, I show the camera mount.
http://www.youtube.com/watch?v=vrcAXn8fIWQ
If your media recorder can also capture audio input, you might put a splitter in the rear pit audio phone jack... and record the interphone or ATC stuff.
If you search "johntmey" on YouTube, the whole collection is there.
John Meyers Harmon Rocket II N5800