Terrell, TX, USA
N3958A
BEECH V35
The pilot reported that he performed a preflight inspection of the airplane that included “physical fuel level inspection in each wing with [a] flashlight.” He checked both wing fuel sumps and drained the fuel sump twice on the left side. Additionally, he sampled the fuel in the belly fuel sump and then secured its door. About 30 minutes after departure, when the airplane was about 2,200 ft mean sea level, the engine lost power. The pilot switched the selector from the left fuel tank to the right fuel tank. However, the engine did not respond, and he performed a forced landing, during which the airplane impacted trees and terrain, resulting in substantial damage to both wings, the fuselage, and the empennage. An initial on-site examination of the airplane revealed the right wing contained fuel and the left wing was compromised from impact damage. Further examination revealed the engine sustained damage and could not be test run. However, no preimpact engine anomalies were detected that would affect normal engine operation. The fuselage fuel gascolator was removed. Its fuel screen was clear of debris or contaminants. However, a blue stain consistent with the color of 100 low-lead aviation gasoline was observed both on the exterior of the bowl and top of the unit. Given the stain on the outside of the gascolator, it is likely that a leak in at the gascolator allowed air to enter and fuel starvation to occur, which resulted in the loss of engine power and subsequent forced landing.
On September 24, 2020, about 1350 central daylight time, a Beech V35 B airplane, N3958A, sustained substantial damage when it was involved in an accident near Terrell, Texas. The pilot was uninjured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot, who had recently purchased the airplane, reported that he performed a preflight inspection of the airplane that included “physical fuel level inspection in each wing with [a] flashlight.” He checked both wing fuel sumps and drained the fuel sump twice on the left side. Additionally, he sampled the fuel in the belly fuel sump and then secured its door. The flight departed Propwash Airport, Justin, Texas, about 1320, and was destined for Van Zandt County Regional Airport, Wills Point, Texas. The pilot reported that about 30 minutes after departure, when the airplane was about 2,200 ft mean sea level, the engine lost power. He switched the selector from the left fuel tank to the right fuel tank. However, the engine did not respond, and he performed a forced landing, during which the airplane impacted trees and terrain; the airplane sustained substantial damage to both wings, the fuselage, and the empennage. An examination of the airplane at the accident site found that the right wing contained fuel and that the left wing was compromised from impact damage. The pilot said that the fuel gauges indicated half tanks for both wings. The airplane wreckage was recovered for further examination. The engine mount area was damaged, and the engine had impacted the firewall area. An engine test run was not able to be performed. The three-bladed propeller remained attached to the engine crankshaft flange, the tip of one blade was bent aft, and another blade had a slight bend aft about mid-span. The throttle and mixture controls cables were attached to their respective controls. The fuel manifold’s fuel lines were connected. The engine-driven fuel pump was removed; the pump turned freely, and its drive shear shaft was intact. The top set of spark plugs was removed; normal wear on the electrodes was noted. The engine timing was checked and appeared to be 22°, which was consistent with the factory setting. Thumb compression and suction were noted on each cylinder when the engine was rotated using the propeller. Additionally, each magneto impulse coupling was heard during engine rotation. Spark was observed on each of the top set of ignition leads. Continuity through the valve train and accessory drive was confirmed. The oil filter remained attached to its mount and was removed. The filter contained a small amount of engine oil. No contaminants or debris was observed in the oil. The inlet fuel screen for the fuel servo was removed and was clear of debris. The fuselage fuel gascolator (located on the left side of the fuselage) was removed. Its fuel screen was clear of debris or contaminants. However, a blue stain, which was consistent with the color of 100 low-lead aviation gasoline, was observed both on the exterior of the bowl and top of the unit. The airplane was modified with wing tip fuel tanks that were subsequently removed. However, the airplane components were not placarded that the wing tip tanks were removed. There were no other preimpact anomalies noted during the examination that would have affected normal engine operation
Fuel starvation due to a fuel system leak, which resulted in a loss of engine power and the subsequent forced landing on unsuitable terrain.
Source: NTSB Aviation Accident Database
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