Probable cause
A loss of engine power due to the failure of the torque sensor bearing.
NTSB analysis
According to the pilot, he was maneuvering the airplane to reverse direction when the engine experienced a loss of power. The pilot leveled the airplane and attempted to restart the engine without success. During the forced landing, the airplane impacted several trees and bushes and was substantially damaged. A postaccident engine examination revealed that the torque sensor bearing failed resulting in the shutdown of the fuel system.
Text from the NTSB. Open the NTSB docket for CEN10LA503 for the full record.
Event
- Date
- Aug 26, 2010
- Type
- Accident
- Place
- Castroville, Texas
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Air Tractor Inc AT-401
- N-number
- N4530L
- 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.