When Should You Use Carburetor Heat?

Carburetor heat should be applied after the engine starts. Leave the carburetor heat on until the engine run smoothly. Generally you should run carb heat any time you SUSPECT carb icing. You can take a look at this AOPA brief on carb ice.

What is the purpose of carburetor heat?

Carburetor, carburettor, carburator, carburettor heat (usually abbreviated to 'carb heat') is a system used in automobile and piston-powered light aircraft engines to prevent or clear carburetor icing. It consists of a moveable flap which draws hot air into the engine intake.

Do you use carb heat in slow flight?

Apply carburetor heat, reduce power to 1500rpm and gradually apply back pressure and the control wheel to reduce airspeed but maintain altitude. ... Having experienced slow flight whilst maintaining heading and altitude you will then practice turning, climbing and descending whilst in this configuration.