For many years Enstrom has had a helicopter that is safe and easy to fly,...built like a tank was my impression when I flew it! So why did it never drop the R22 from its place at the top of the training list? One word,...
Price!
As far as the R22 overhaul goes, I have never seen an R22 come back to a school when it has reached its overhaul time. I'm guessing schools just trade them in for another one instead?