Probable cause
The total loss of engine power due to water contamination and corrosion within the fuel system at an undetermined time and from an undetermined source.
NTSB analysis
The commercial pilot was performing an aerial application pass when the engine suddenly stopped running. The pilot landed the airplane in a field and the airplane nosed over during the landing, bending the engine firewall and substantially damaging both wings. The pilot was uninjured. The engine had two cracked cylinders and had been stored outside and exposed to weather elements prior to being inspected. Inspection of the carburetor revealed corrosion consistent with water exposure on internal components, including the finger filter. Inspection of the fuel pump inlet fitting showed evidence of rust on the blades and inlet portion of the fitting. The inlet fuel fitting was present and the inlet fuel line was completely separated at the inlet fitting. The rotor assembly was removed and there was evidence of water damage, rust deposits in the pump interior, liner, lower journal, and bearing. The rust deposits were excessive and impeded proper functioning.
Text from the NTSB. Open the NTSB docket for DEN08LA150 for the full record.
Event
- Date
- Sep 4, 2008
- Type
- Accident
- Place
- Atkinson, Nebraska
- Nearest airport
- O'Neill Municipal Airport (ONL)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Weatherly 620B
- N-number
- N2036U
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 137 (agricultural)
- Purpose of flight
- Aerial application
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.