Temco D-16A N131N accident near Clarksville, Arkansas

Probable cause

The pilot’s mismanagement of the fuel supply, which resulted in a loss of engine power on the left engine due to fuel starvation.

NTSB analysis

The pilot reported that shortly after takeoff in the twin-engine airplane the left engine stopped producing power. The airplane rolled left and impacted trees which resulted in substantial damage to the fuselage, empennage, and both wings.

The airplane was equipped with five fuel tanks: left and right nacelle tanks, left and right tip tanks, and one main fuel tank. The fuel tanks were drained after the accident and the left nacelle was empty. The right nacelle had negligible fuel. The main fuel tank contained 27 gallons, and the left tip tank contained 13 gallons. The right tip tank was compromised.

The right fuel selector valve was found set to the right nacelle tank, and the left fuel selector valve was set to the left nacelle tank. The pilot stated that he thought the fuel selector valves were set to the main tank; however, he also stated that it was possible that he had the nacelle fuel tanks selected. The main tank position is 180 degrees from the nacelle tank position, and the two positions were easy to confuse. Given the as-found state of the selector, he likely had the left and right nacelle fuel tanks selected.

A small leak was discovered on the upper portion of the left nacelle fuel tank’s bladder, but it was in a location that would not have accounted for the tank being found totally empty. When fuel was added to the airplane, the left engine was started and operated normally.

The circumstances of the accident are consistent with the left engine’s loss of engine power due to fuel starvation.

Text from the NTSB. Open the NTSB docket for CEN24LA151 for the full record.