Cub Crafters CC18-180 Pilot Operating Handbook page 160

SECTION 7
AIRCRAFT AND SYSTEMS
Advisory
Precautions and Procedures to be taken in
Preventing Aircraft Reciprocating Engine
Induction System and Fuel System Icing
Problems.
AS CARBURETOR ICE ACCUMMULATES, IT
PRODUCES AN EXCESSIVELY RICH AIR/FUEL
MIXTURE. THE ENGINE MAY START TO LOSE
POWER OR STOP COMPLETELY. AT THIS POINT
THERE MAY NOT BE SUFFICIENT HOT AIR IN THE
ENGINE COMPARTMENT TO MELT THE
ACCUMULATION OF CARBURETOR ICE, EVEN
WHEN THE CARBURETOR HEAT CONTROL IS IN
THE FULL "HOT" POSITION.
In general, follow these practices:
When icing conditions exist, apply carburetor heat often
in all flight regimes. The main symptom of icing in the
induction system will be loss of power.
Never use partial carburetor heat unless the aircraft is
equipped with a carburetor temperature gauge, ice light
or similar instrumentation. Partial heat could make
matters worse, unless you know exact carburetor
temperatures. Remember, full heat or nothing.
Be especially vigilant at lower power settings. It is good
practice to use carburetor heat on any descent where you
have reduced power, especially for landing.
In conditions conducive to icing or if ice was noted during
engine run-up, perform another carburetor heat check
immediately before takeoff. DO NOT leave carburetor
heat on for the actual takeoff.
REPORT TC10000AFM
Page Number: 7-8
Circular 20.113
WARNING
CUB CRAFTERS
- Pilot
Issued: 05/31/05
Date of Revision: 06/20/14
CC18-180