Probable cause
A dynamic rollover inadvertently induced by the pilot during landing.
NTSB analysis
The pilot reported that the approach and landing were normal. After landing, he lowered the collective and began to decrease engine power by manipulating the throttle closed. Before the throttle was completely closed, the helicopter suddenly rolled to the right and came to rest on its right side, incurring damage to the airframe, main rotor, and tail boom. A postaccident examination did not reveal any anomalies consistent with a preimpact failure or malfunction. Dynamic rollover is the tendency of a helicopter to continue rolling when the critical angle is exceeded, if one skid is on the ground, and the helicopter is pivoting around that point. Dynamic rollover is possible when a skid is caught by a projection on the surface or when landing on a slope.
Text from the NTSB. Open the NTSB docket for CEN10LA477 for the full record.
Event
- Date
- Aug 13, 2010
- Type
- Accident
- Place
- Rocky Mount, Missouri
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Bell 206B
- N-number
- N54BE
- Category
- Helicopter
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.