AMA Website!? HA! I am talking about flying professionally/commercially. In the US, right now you MUST get your 333 to fly professionally. If you want to just be a park flyer, then you don't need anything, but if you want to fly with the proper insurance and at places like the National Parks (like we just did in Monument Valley and in Moab for Toyota ) you need the COA, end of story. Or you can just take the risk and see what happens, maybe it will work out for you. If you want to do film or TV (like we do) then you need the COA. Just take a look at the FAA's website, it's pretty well spelled out.