Anyone have any experience with registering a uav with the faa? I'm a pilot and an aircraft owner so I know how painful the process can be, but I have a few questions about the 8050. - maximum takeoff weight? P3P - engine model designation? -engine power output? Also how did you provide a bill of sale? Notarized sales receipt? I'm doing all this as the first step in a 333 exemption. Thanks in advance for any advice or info.