You are correct, but ARF's are basically RTF's, they are just missing an engine, radio, radio equipment, and RTF usually has a little more of the assembly done, but a RTF is basically an ARF is probally how Piper Chuck also looks at it when he started the poll. I can't hardly imagine if all someone bought was ready to Flys over their Lifetime. I would have about 25 Radios by now! LOL