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NTSB Report
July 11, 2014 · Air Tractor AT 502B · N636LA
Cavalier, ND
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
July 11, 2014
Injury Outcomes
No injuries (1 uninjured)
Location
Cavalier, ND
Aircraft
Air Tractor AT 502B (2001)
Tail Number
N636LA
Operator
Hinkle Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN14CA366
The airplane was departing a rough, unimproved turf strip for an aerial application flight. During the takeoff, the airplane hit a small turf obstruction and the airplane became airborne prematurely. The airplane settled and the tailwheel collided hard with the ground followed by the main landing gear. The pilot lost control of the airplane as it porpoised and swerved to the right. He was unable to regain control of the airplane before it ground looped and the wing contact the ground. Substantial damage was sustained to the left wing. No preimpact anomalies were detected with the airplane.
NTSB Probable Cause
Environmental issues-Physical environment-Object/animal/substance-Hidden/submerged object-Contributed to outcome
Full Narrative
The airplane was departing a rough, unimproved turf strip for an aerial application flight. During the takeoff, the airplane hit a small turf obstruction and became airborne prematurely. The airplane settled and the tail wheel collided hard with the ground followed by the main landing gear. The pilot lost control of the airplane as it porpoised and swerved to the right. He was unable to regain control of the airplane before it ground looped and the wing contact the ground. Substantial damage was sustained to the left wing. No preimpact anomalies were detected with the airplane.
Flight
Event TypeAccident
Event Time08:15 CDT
Nearest AirportPrivate Strip (0nm N)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAir Tractor AT 502B
Tail NumberN636LA
Aircraft CategoryAir
DamageSubstantial
OperatorHinkle Aviation
Operating RulePart 137
Engines1
Engine TypeTurboprop
Engine DetailsPratt & Whitney · PT6A-34AG · Turboprop · 750
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 34 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind230° @ 6 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F / 66 F
Altimeter29.80 inHg
Observation Time13:13
Weather SourceWFAC