FARM AIR FLYING SERVICE INC: http://registry.faa.gov/N5091N
FAA Flight Standards District Office: FAA Sacramento FSDO-25
NTSB Identification: GAA16CA303
14 CFR Part 137: Agricultural
Accident occurred Wednesday, June 01, 2016 in Nicolaus, CA
Probable Cause Approval Date: 10/27/2016
Aircraft: AIR TRACTOR INC AT 502, registration: N5091N
Injuries: 1 Uninjured.
NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.
The pilot reported that while performing aerial application operations and flying under power lines, the airplane propeller struck a power line. Subsequently, the airplane vibrated excessively and the pilot performed an off-airport landing at a farm field.
The pilot further reported that during the landing roll, he could not maintain directional control of the airplane on the rough terrain; the airplane veered sharply to the right and the left wing impacted the ground.
The left wing sustained substantial damage.
The pilot reported there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The pilot's insufficient clearance from a power line during aerial application operations, which resulted in a power line strike, a forced landing on unsuitable terrain, loss of directional control, and collision with terrain.