The helicopter is a rather complicated machine that is held in the air by rotating a powerful screw located on the roof. The same principle you will use to lift our design in the air, consisting of four blocks in the propeller. On the blocks letters are written and they are constantly changing. To stir the flying machine and make it fly, click on the symbols that are drawn, finding them on your keyboard. Press and hold the key to block the blocks. Watch for the change of letters to prevent the helicopter from falling down. In the game Aviation Boxes you will need dexterity and the ability to quickly find the desired letters.