How do you use the helicopter on farm frenzy 3

Helicopter In Farm Frenzy 3 Usage

• The helicopter can bring in items that you cannot grow on the farm
• The helicopter can bring in goods from the city
• In the early part of the game, the helicopter is slow so you may want to get ordering goods done right away at the beginning of the level
  
• Make sure to upgrade the helicopter so you can hold more items and to have the items you order delivered to your faster

I have included two links below in the related links area of videos off a walkthrough site where they are using the helicopter if you need more info (see links below).

Below see level 50 for an example or below see level 52 usage of the helicopter.