can anybody provide some technical insight about the factor of high altitude flying in a helicopter,
my experience is only with a H300 at 10,000ft and AS350 at 12,000tf
- reduced power margin especially in the piston machine, but a lot can still be done if you remain very smooth
- blades having a much more frequent and drier slapping sound
- passengers tend to fall asleep at the back especially young ones
- VNE coming much sooner (at least the pre VNE vibration coming sooner)
- control margin decreasing quickly away from the max rate of climb speed (especially as you get to 0 rate of climb)
- very easy to over NG if you decrease altitude fast ( I have yet to fully understand that one)
any other factors?