Hiller 12 E
Generations of RN helicopter pilots owe their livelihoods to the trusty old Hiller. Me, I used to hate it, probably because I never really mastered it. Luckily for me I had one of those trips when everything went right on my Mid Course Check and was allowed to progress to the much more sedate and serious Whirlwind 7.
I would love to celebrate the attainment of the terminal age with a ride in a Hiller, just to teach it a lesson!