"is it possible?  probably.
Has it been done yet?  Nope.

Do you have experience programming kalman filters?  I've often wondered if they would be beneficial with respect to sensor fusion and redundancy."

"see below
http://code.google.com/p/arducopter/wiki/Python
to run the scripts, press the "script" button on the "Actions" tab when viewing the Flight Data window.

I'm not sure how to go about stopping/canceling a running script though.  Could anyone…"

"I just received the one you mentioned, it works great!  I did have to change the connectors though.

http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6955"