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NTSB Report
March 7, 2012 · Air Tractor AT-502B · N9148C
Hollandale, MS
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
March 7, 2012
Injury Outcomes
No injuries (1 uninjured)
Location
Hollandale, MS
Aircraft
Air Tractor AT-502B
Tail Number
N9148C
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ERA12CA216
The pilot reported that he was taxiing the tailwheel-equipped agricultural application airplane for takeoff when the airplane encountered a left quartering tailwind gust, and the pilot was unable to maintain directional control. The airplane veered left and departed the left side of the runway. The tailwheel block attaching bolts failed and the tailwheel spring impacted the ground, stopping the airplane's lateral rotation, which resulted in substantial damage to the fuselage just forward of the vertical stabilizer. The pilot reported no preaccident mechanical malfunctions or failures that would have precluded normal operation.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
Full Narrative
While back-taxiing the tail wheel-equipped agricultural application airplane for takeoff, the pilot reported that he encountered a gust of left quartering tailwind and was "unable to maintain directional control" of the airplane. The airplane veered left and departed the left side of the runway. The tail wheel block attaching bolts subsequently failed and the tail wheel spring then impacted the ground, stopping the airplane's lateral rotation, and shearing all four of the longerons just forward of the vertical stabilizer. The pilot reported no preaccident mechanical malfunctions or failures that would have precluded normal operation.
Flight
Event TypeAccident
Event Time11:30 CST
Nearest AirportHollandale Municipal (0nm)
Runway08
Runway Length3000 ft
Runway Width50 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAir Tractor AT-502B
Tail NumberN9148C
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 137
Engines1
Engine TypeTurboprop
Engine DetailsPratt & Whitney · PT-6A · Turboprop · 750
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 56 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind250° @ 10 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point61 F / 25 C
Altimeter30.12 inHg
Observation Time16:53
Weather SourceWFAC