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NTSB Report
August 2, 2017 · Air Tractor AT 402 B · N38HT
San Angelo, TX
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
August 2, 2017
Injury Outcomes
No injuries (1 uninjured)
Location
San Angelo, TX
Aircraft
Air Tractor AT 402 B
Tail Number
N38HT
Operator
Usda/Ars
Injuries
None
Aircraft Damage
Substantial
NTSB Number
GAA17CA469
The pilot of the tailwheel-equipped airplane reported that, during the landing roll in crosswind conditions, the airplane began an uncommanded slow right turn. He added that he applied left brake and left rudder, but the airplane continued to turn right. Subsequently, the airplane ground looped to the right, the left main landing gear collapsed, and the left wing impacted the ground. The left wing sustained substantial damage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The automated weather observation system on the airport reported that, about 10 minutes after the accident, the wind was from 90° at 9 knots. The pilot landed on runway 36.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
Full Narrative
The pilot of a tailwheel-equipped airplane reported that during the landing roll in crosswind conditions, the airplane began an un-commanded slow turn to the right. He added that he applied left brake and left rudder, but the airplane continued to the right. Subsequently the airplane ground looped to the right, the left main landing gear collapsed, and the left wing impacted the ground. The left wing sustained substantial damage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The automated weather observation system on the airport reported, about 10 minutes after the accident, that the wind was from 90° at 9 knots. The pilot landed on runway 36.
Flight
Event TypeAccident
Event Time18:35 CDT
Nearest AirportSan Angelo Rgnl/Mathis Field (0nm WSW)
Runway36
Runway Length8049 ft
Runway Width150 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAir Tractor AT 402 B
Tail NumberN38HT
Aircraft CategoryAir
DamageSubstantial
OperatorUsda/Ars
Engines1
Engine TypeTurboprop
Engine DetailsPratt And Whitney · PT6A-27 · Turboprop · 680
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 64 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind60° @ 9 kt
Visibility10 sm
CeilingOvercast 9000 ft
Temperature / Dew Point66 F
Altimeter30.04 inHg
Observation Time22:51
Weather SourceWFAC