No fatalities

ROBINSON HELICOPTER CO R66 NO SERIES accident at Knoxville, TN, 30 Jan 2021

Knoxville, TN, United States

On January 30, 2021, a ROBINSON HELICOPTER CO R66 NO SERIES was involved in an aviation accident near Knoxville, TN. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s failure to maintain directional control of the helicopter, which resulted in rear portion of the right skid contacting the ground and a subsequent dynamic rollover. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The pilot’s failure to maintain directional control of the helicopter, which resulted in rear portion of the right skid contacting the ground and a subsequent dynamic rollover.

— NTSB Determination

Contributing factors

Directional control — Not attained/maintainedPilot