Carburetor Heat

Question 1

Carburetor ice

Answer 1

The buildup of ice causing the fuel inlet of the carburetor to become clogged.

Question 2

Carburetor ice is mostly likely to occur when?

Answer 2

When temperatures are below 70 degrees Fahrenheit or 20 degrees celsius and the relative humidity is about 80%.
However icing can occur even in temperatures as high as 100 degrees and humidity as low as 50%.

Question 3

Carburetor heat should be used when?

Answer 3

Whenever carb ice is suspected. Don’t use carb heat during high power phases of flight.

Question 4

Carb heat comes from…

Answer 4

A metal shroud that surrounds the exhaust of the engine, a valve opens and directs this warm air towards the carburetor.

Question 5

If you see your engine RPM, you should firs suspect….

Answer 5

Carb ice. If after turning the carb heat on, the engine RPM drops more before a slow rise in RPM, then your suspicions of carb ice were correct.