Summary
On July 10, 2007, a Bell 47G-5 (N8140J) was involved in an incident near Jesup, IA. All 1 person aboard were uninjured. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this incident to be: The pilot's inability to maintain control of the helicopter when it unexpectedly encountered a whirlwind shortly after takeoff.
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.
This incident is documented in NTSB report CHI07CA212. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N8140J.
Accident Details
Probable Cause and Findings
The pilot's inability to maintain control of the helicopter when it unexpectedly encountered a whirlwind shortly after takeoff.
Aircraft Information
Registered Owner (Current)
Analysis
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.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# CHI07CA212