#1. Anytime helicopter crashes, sounds don't correlate with crash sequence.
#2. Whenever a helicopter lands on an improved surface which has standard oleo landing gear, helicopter either crashes or stops suddenly.
#3. Improve gyroscopic precession of simulated helicopter aircraft.
#4. Entering/Exiting helicopter, no door movement, have doors move on vehicles.
Include or perhaps integrate the imperial system as an 'option' to your American consumers... Much of the U.S. Military uses MPG, KNOTS , YARDS, and FEET.