http://www.casa.gov.au/wcmswr/_asset...ftac23-1-0.pdf
Folks,
Several threads, over time, have discussed external mounting of cameras etc. The above is a draft AC that outlines what is needed for a normal cat.Part 23 certified aircraft.
The requiremenst will not be greatly different for aircraft in other categories, just the details of the who and how of making the modification legally.
Tootle pip!!