Approaching helicopter idling, turbine whine & rotor noise increasing at approach, door open, enter ...
A helicopter taking off, loud propeller sound
Helicopters engines slowing down
Exiting helicopter, closing door and walking away
Closing door of a helicopter while engines run
Helicopter idling, slow rotor movement, some turbine whine, exterior perspective.
Helicopter flying, inside perspective
Walking towards a helicopter
Helicopter start up and operate
Idling helicopter before takeoff, with rotor and engine noise, doors open and slam shut.