ORIGINAL: Rj-TailSpin
As long as the plane remains in visual range and we can see which direction it's pointing... this would be the limit to altitude and distance. Am I right?
You would be 100% correct. The only rule covering altitude is #2:
ORIGINAL: AMA Safety Code
"2) I will not fly my model higher than approximately 400 feet within 3 miles of an airport without notifying the airport operator. I will give right-of-way and avoid flying in the proximity
of full-scale aircraft. Where necessary, an observer shall be utilized to supervise flying to avoid having models fly in the proximity of full-scale aircraft."
Like KE4UVQ said, there's one in every crowd, like in another thread where Balsa Master swears that launching a rocket glider qualifies as a guided missile and will land you in Guantanamo.
Note that in rule #2, flying above 400ft IS permitted near an active airport, so long as the airport operator has been informed of the activities.