Flying a helicopter is hard for anyone who is not trained to fly it. However, for those with proper training, it is deemed to be very easy.
A machine that is like flying in a helicopter.
Because its flying..
Sikorsky's V-300 was the first practical helicopter.
I have found nothing in any search to support that a boombox can drown out a low-flying airplane or helicopter.
Igor Sikorski invented the first practical flying helicopter.
Face away from the helicopter
Some people say that flying an airplane would be like riding a bike and flying a helicopter is like riding a unicycle in comparison.
A flying machine with a rotor an a propeller is a helicopter
A helicopter needs a solid surface to fly over.
think rockets
it is the small rotating "fan" in the back
You do not say which of the helicopter missions in GTA IV. But, if it is of any help: All of the helicopter missions on GTA IV are helped enormously by helicopter flying practice. It is worth jacking one of the Maverick helicopters from Helitours in Algonquin and practising taking off, flying, and landing, regularly, until you are able to do this easily. You can then approach the chopper missions with more "flying" expertise.