Monday, February 01, 2021

Low Altitude Operation/Event: Ayres S2R-T34 Thrush, N40226; accident occurred June 12, 2020 in Lenore, Nez Perce County, Idaho

Aviation Accident Final Report - National Transportation Safety Board 

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Helena, Montana

Investigation Docket - National Transportation Safety Board:


Location: Lenore, Idaho
Accident Number: WPR20CA179
Date & Time: June 12, 2020, 15:00 Local 
Registration: N40226
Aircraft: Ayres S2R 
Aircraft Damage: Destroyed
Defining Event: Low altitude operation/event
Injuries: 1 None
Flight Conducted Under: Part 137: Agricultural


The pilot reported that prior to conducting an aerial application on a field, he circled the field twice to look for obstacles. As he completed his first aerial application pass, he observed power lines that he did not previously see. Being too close to climb above them, the pilot chose to fly underneath the power lines. The airplane subsequently struck a guy wire and impacted terrain. The fuselage and wings were substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to maintain clearance from power lines while maneuvering during an aerial application flight, which resulted in a wire strike.


Personnel issues Monitoring environment - Pilot
Environmental issues Wire - Awareness of condition

Factual Information

History of Flight

Maneuvering-low-alt flying Low altitude operation/event (Defining event)
Maneuvering-low-alt flying Collision with terr/obj (non-CFIT)

Pilot Information

Certificate: Commercial
Age: 55, Male
Airplane Rating(s): Single-engine land
Seat Occupied: Center
Other Aircraft Rating(s): None 
Restraint Used: 4-point
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 Without waivers/limitations
Last FAA Medical Exam: July 9, 2019
Occupational Pilot: Yes 
Last Flight Review or Equivalent: July 26, 2018
Flight Time: 9693 hours (Total, all aircraft), 4000 hours (Total, this make and model), 9693 hours (Pilot In Command, all aircraft), 395 hours (Last 90 days, all aircraft), 326 hours (Last 30 days, all aircraft), 12 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Ayres 
Registration: N40226
Model/Series: S2R T34
Aircraft Category: Airplane
Year of Manufacture: 1981 
Amateur Built: No
Airworthiness Certificate: Restricted (Special) 
Serial Number: T34-046DC
Landing Gear Type: Tailwheel 
Seats: 1
Date/Type of Last Inspection: Annual
Certified Max Gross Wt.:
Time Since Last Inspection: 
Engines: Turbo prop
Airframe Total Time: 
Engine Manufacturer: Pratt & Whitney
ELT: Not installed
Engine Model/Series: PT6-34AG
Registered Owner: 
Rated Power: 750 Horsepower
Operating Certificate(s) Held: Agricultural aircraft (137)

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC)
Condition of Light: Day
Observation Facility, Elevation: KLWS, 1436 ft msl
Distance from Accident Site: 21 Nautical Miles
Observation Time: 20:56 Local 
Direction from Accident Site: 257°
Lowest Cloud Condition: Clear
Visibility 10 miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: / 
Turbulence Type Forecast/Actual:  /
Wind Direction: Turbulence Severity
Forecast/Actual:  /
Altimeter Setting: 29.84 inches Hg 
Temperature/Dew Point: 27°C / 14°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Craigmont, ID (S89) 
Type of Flight Plan Filed: None
Destination: Craigmont, ID (S89)
Type of Clearance: None
Departure Time: 13:45 Local
Type of Airspace: Class G

Wreckage and Impact Information

Crew Injuries: 1 None 
Aircraft Damage: Destroyed
Passenger Injuries:
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 46.454723,-116.524169(est)

1 comment:

  1. Neat handwriting, something you don't always encounter on these reports.