What happened
On March 16, 2023, at approximately 1610 Alaska daylight time, a Cessna 182R, registration N6266E, was involved in an accident in Minto, Alaska. The flight, operated by Civil Air Patrol Inc under Part 91 regulations, originated from Fairbanks International Airport (FAI) for the purpose of a cadet orientation flight.
During the flight toward Minto Airport (51Z), the pilot experienced a partial loss of engine power. The pilot applied carburetor heat, which restored normal engine operation, and continued the flight with the carburetor heat left on. However, while on short final approach for landing at 51Z, the engine suffered a total loss of power. The aircraft landed short of the runway, resulting in substantial damage to the engine mount. There were no injuries to the pilot or passengers.
The investigation
An investigation of the engine was conducted by an NTSB investigator. The engine was able to start normally and responded to throttle inputs with normal cylinder head temperature and exhaust gas temperature indications. A magneto check confirmed both magnetos were fully operational, and the carburetor heat control was found to be functional.
Further inspection showed that air intake and exhaust connections were secure and unobstructed. Thumb compression was confirmed on all cylinders, and the carburetor heat control and box showed no anomalies. Additionally, the bottom spark plugs were inspected, and the electrodes appeared normal. Fuel sampled from the sump drain and carburetor bowl showed no evidence of water. The examination of the engine and airframe revealed no evidence of mechanical malfunctions or failures prior to the impact that would have prevented normal operation. At the time of the accident, the temperature at the site was 6.8°F with a dew point of -9.4°F, placing the aircraft outside of the temperature range for possible carburetor icing.