N10857 – Bell 206B – 1989-07-31 NTSB Accident Report

On July 31, 1989, a Bell 206B (N10857) was involved in an incident near Rialto, CA. All 2 people aboard were uninjured. The aircraft sustained substantial damage.

The National Transportation Safety Board determined the probable cause of this incident to be: FAILURE TO INSTALL TWO OF THE FOUR REQUIRED NUTS WHICH RETAIN THE HIGH SPEED COUPLING INPUT DRIVE SHAFT TO THE TRANSMISSION.

This incident is documented in NTSB report LAX89LA253. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N10857.