Well as ever no one has bothered to apply common sense to the lessons.
EOL's after first solo - intelligent
radio nav, approx 90% of all non ifr helicopter's are not equipped with rnav. The remaining 10% all have it and are based at flying schools so that we can teach rnav. Approx 100 % of vfr helicopters have sat nav, what does that tell you ? Answers on a postcard.