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NTSB Report
June 9, 2015 · Air Tractor AT 401 Undesignat · N4549E
Wall, SD
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
June 9, 2015
Injury Outcomes
No injuries (1 uninjured)
Location
Wall, SD
Aircraft
Air Tractor AT 401 Undesignat (1990)
Tail Number
N4549E
Operator
Cedar Butte Air
Injuries
None
Aircraft Damage
Substantial
NTSB Number
GAA15CA117
The pilot reported that during takeoff from a private grass airstrip, the airplane would not climb above terrain at the end of the runway and impacted the ground coming to rest in a wheat field. The airplane sustained substantial damage to the right wing, right aileron, and fuselage. The pilot reported the outside air temperature at the time of the accident was 91 degrees Fahrenheit and the airplane was loaded near its maximum gross takeoff weight of 6,000 pounds. The pilot stated, "The load was too heavy for the weather conditions at this time". The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
NTSB Probable Cause
The pilot's failure to adjust the airplane's useful load to compensate for the high temperature, which resulted in an insufficient climb rate to clear surrounding terrain, and a runway excursion.
Full Narrative
The pilot reported that during takeoff from a private grass airstrip, the airplane would not climb above terrain at the end of the runway and impacted the ground coming to rest in a wheat field. The airplane sustained substantial damage to the right wing, right aileron, and fuselage. The pilot reported the outside air temperature at the time of the accident was 91 degrees Fahrenheit and the airplane was loaded near its maximum gross takeoff weight of 6,000 pounds. The pilot stated, "The load was too heavy for the weather conditions at this time." The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
Flight
Event TypeAccident
Event Time16:30 MDT
Nearest AirportPrivate Airstrip (0nm N)
Runway35
Runway Length2750 ft
Runway Width150 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAir Tractor AT 401 Undesignat
Tail NumberN4549E
Aircraft CategoryAir
DamageSubstantial
OperatorCedar Butte Air
Operating RulePart 137
Engines1
Engine TypeTurboprop
Engine DetailsAireaserch/Garrett · TPE331-1 · Turboprop · 665
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 65 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind320° @ 4 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point64 F
Altimeter29.85 inHg
Observation Time22:24
Weather SourceWFAC