R22
It doesn't fly itself, but a trainer shouldn't be too easy. It's not a 'forgiving' aircraft, and can be tricky to fly well but, if you learn the basics in an R22, it makes conversion onto bigger machines much easier.
And, it's the most economical way to learn to fly helicopters. The sales figures speak volumes about the popularity of the machine.
If it wasn't for Frank Robinson, many people wouldn't be flying helicopters at all. Arguably, he's made the biggest contribution to the rotary world since the great Igor.
[ 01 January 2002: Message edited by: Heliport ]</p>