First Plane?
"Please educate me. How could a receiver and servos that are leagle in one plane be ileagle in another plane? "
Most (all?) of the park fliers we get here, fire bird, fighter bird etc, etc are on 27mhz radio gear, this is used and aproved for surface RC, cars, boats etc etc and is not aproved for aircraft RC, it gets around the laws by being sold as a "toy" with a range of only 500 meters.
if you used the radio gear in a "normal" rc plane you would be breaking the law and your duty of care as it is accepted that the rc gear is for "toys"
it would be OK to transplant the RC gear in to a plane that could also be considered a "toy"
i know its wishy washy but thats the rules, basicaly its the definition of "toy"