The pilot reported that, during the descent to the airport in Lexington, Texas, he applied carburetor heat but that he then removed carburetor heat when leveling off.
He reduced the throttle to slow the Cessna 182 while on final approach. When he advanced the throttle to maintain airspeed, the engine power did not increase and he was unable to restore full engine power. The engine subsequently lost all power when he applied carburetor heat.
During the forced landing to a field, the nose landing gear and propeller hit a barbed wire fence, and the airplane then nosed down, hit the ground, and nosed over.
The atmospheric conditions at the time of the accident were conducive to the formation of serious carburetor icing at glide power. It is likely that carburetor ice developed after the pilot reduced the engine power/closed the throttle while in the traffic pattern without applying carburetor heat, which resulted in a loss of engine power.
The manufacturer’s before landing checklist states to apply carburetor heat before closing the throttle.
The NTSB determined the probable cause as the pilot’s improper use of the carburetor heat, which resulted in a total loss of engine power due to carburetor icing.
NTSB Identification: CEN14LA133
This February 2014 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.