E86
Out of interest what type of heli were you in.
I reguarly like you have to do vortex ring recovery. Normally with a 300 ac back to 20 kts rod up to 500ft a min with 18 " mp the ac will only just start to show incipient vortex ring and sometimes ( 50/50) with application of power she will haul herself back to a hover ! Which makes the demo sometimes difficult as you havent been in incipient vortex ring!!!!!!!!!