Grampa says I can use his computer to ask this question:

What's the difference between "3D," "Aerobatics" and "Pattern?"

Also, the "avalanche" maneuver describes a "1 1/2, 540 degree" snaproll at the top of a loop. Yet, the diagram (in AMA manual) has the words, "snap 360 roll" printed next to the snap maneuver that;s diagramed. If it's a 360 degree snap, then the plane will complete the maneuver with an inside loop. But, if it's a 540 degree snap, the plane will have to complete an outside loop, and will come out of it upside-down on the bottom of the loop. Which is it?

By the way, my Grampa is an old guy, (don't tell him I said that) so I'm no longer a teenager. But, I still want to get into R/C competition with his help.

Thanx.