Wageslave
I'm afraid I don't think attaching things to the outside of aircraft can be done without permission.
tqmatch
Provided you are not breaking into any aircraft systems or structure, or making permanent changes, there is no requirement for any STC or issue of a CRS for the work
So which is it? what do the regs say?
Apparently it's perfectly ok to remove a door and have a cameraman hang his feet out with a camera on his lap though.