Aviation Accident Summaries

Aviation Accident Summary ANC21LA083

Delta Junction, AK, USA

Aircraft #1




The pilot was transporting personnel from a remote helipad that was constructed of a plastic, floating dock. She was unaware that the helicopter’s right skid had slid under a portion of the plastic dock. As she raised the collective to depart, she felt the helicopter roll to the right, and she attempted to correct the lateral rolling motion by lowering the collective. The helicopter continued to roll and came to rest on its right side. Subsequently, the helicopter sustained substantial damage to the main rotor system.   The pilot reported no preimpact mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

Probable Cause and Findings

The pilot’s inability to maintain lateral control during the takeoff, which resulted in dynamic rollover. Contributing to the accident was the pilot’s decision to utilize an unsuitable landing area for flight operations.


Source: NTSB Aviation Accident Database

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