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NTSB Report
July 10, 2007 · Bell 47G-5 · N8140J
Jesup, IA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
July 10, 2007
Injury Outcomes
No injuries (1 uninjured)
Location
Jesup, IA
Aircraft
Bell 47G-5
Tail Number
N8140J
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI07CA212
The helicopter impacted the ground following a loss of control when it encountered a whirlwind on takeoff. The pilot reported that he stopped spraying because the winds had increased. He stated that he landed and spoke with his ground crew then decided to fly the helicopter back to his home airport. He reported that the local winds were from the west-southwest at 12 mph gusting to 20 mph. He stated that he took off over a cornfield and had just passed through translational lift when he noticed a whirlwind in front of him and slightly to his left. He stated that the next thing he knew he was in the whirlwind. He stated that he felt the helicopter shake then it rolled to the right. The helicopter came to rest upside down in the cornfield.
NTSB Probable Cause
The pilot's inability to maintain control of the helicopter when it unexpectedly encountered a whirlwind shortly after takeoff.
Full Narrative
The helicopter impacted the ground following a loss of control when it encountered a whirlwind on takeoff. The pilot reported he stopped spraying because the winds had increased. He stated he landed and spoke with his ground crew then decided to fly the helicopter back to his home airport. He reported the local winds were from the west-southwest at 12 mph gusting to 20 mph. He stated he took off over a cornfield and had just passed through translational lift when he noticed a whirlwind in front of him and slightly to his left. He stated that the next thing he knew he was in the whirlwind. He stated he felt the helicopter shake then it rolled to the right. The helicopter came to rest upside down in the cornfield.
Flight
Event TypeAccident
Event Time10:30 CDT
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo
Aircraft
AircraftBell 47G-5
Tail NumberN8140J
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-435 · Reciprocating
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 46 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind280° @ 10 kt, gusting 17 kt
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0