Incident Overview
A pilot who had recently purchased an aircraft and obtained a ferry permit (with a delinquent annual inspection) encountered engine difficulties during a flight. After the first stop, the pilot reported trouble starting the engine; it would start but then die when throttle was applied. A mechanic advised that the carburetor heat required an overhaul.
In-Flight Events
During cruise flight, the pilot observed visible moisture on the windshield and applied carburetor heat. Subsequently, the carburetor heat temperature indication entered the yellow range. The pilot added more heat, after which the engine quit. Attempts to restart the engine were unsuccessful; it would fire but die upon throttle application.
Forced Landing
The pilot attempted a forced landing on an island. The aircraft touched down approximately 100 feet short of the intended landing area and sank.
Post-Accident Examination
Following the accident, the carburetor was disassembled and inspected. The examination revealed no mechanical failure or undue wear and tear. However, the inspection did not determine whether the carburetor was set within manufacturer specifications.