Piper J3C-65 N35645 accident near Krum, Texas

Probable cause

A total loss of engine power in flight due to carburetor icing.

NTSB analysis

The pilot was practicing flight maneuvers near his home field over and around a lake. He reduced the engine's power to idle while performing a descending turn and then attempted to add power to bring the airplane to a level attitude. The engine experienced a total loss of power and the airplane's altitude was too low for the pilot to reach the shoreline. The pilot performed a forced landing into the lake, resulting in substantial damage to the left wing and aileron. The pilot reported no mechanical malfunctions with the airplane and opined that the loss of engine power was due to carburetor icing. A postaccident examination by a Federal Aviation Administration inspector did not reveal any evidence of a preimpact anomaly. A review of a carburetor icing chart located in Special Airworthiness Information Bulletin CE-09-35 revealed that the airplane was operating in an area that was conducive to serious icing at glide power.

Text from the NTSB. Open the NTSB docket for CEN10LA416 for the full record.