No fatalities

BELL 206L-3 NO SERIES accident at Covelo, CA, 28 Oct 2021

Covelo, CA, United States

On October 28, 2021, a BELL 206L-3 NO SERIES operated by Helico Sonoma Inc. was involved in an aviation accident near Covelo, CA. No fatalities were reported. Investigators recorded the probable cause as: A passenger’s unsecured object departed the cabin resulted in a collision with the tail rotor drive shaft. 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

A passenger’s unsecured object departed the cabin resulted in a collision with the tail rotor drive shaft.

— NTSB Determination

Contributing factors

PassengerContributed to outcome