Rigga
The camera team had to get their bracket, and where they wanted to mount it, approved as an STC before they could install it.
So there should be legislation somewhere stating this right?
Another enterprise at another company tried to install home-made bracketry to the frames/fixtures - and this constituted both an unapproved mod and a permanent fixture.
Presumably then the bracketry was mounted permanently by drilling holes in the airframe?