Summary
On March 19, 1991, a Sikorsky H-19/S55 (N9894) was involved in an incident near Richvale, CA. All 1 person aboard were uninjured. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this incident to be: THE FAILURE OF THE ENGINE'S NUMBER 4 CYLINDER INTAKE VALVE KEEPER. TREES UNDER THE HELICOPTER AT THE TIME OF THE LOSS OF ENGINE POWER WERE FACTORS IN THE ACCIDENT.
This incident is documented in NTSB report LAX91LA137. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N9894.
Accident Details
Probable Cause and Findings
THE FAILURE OF THE ENGINE'S NUMBER 4 CYLINDER INTAKE VALVE KEEPER. TREES UNDER THE HELICOPTER AT THE TIME OF THE LOSS OF ENGINE POWER WERE FACTORS IN THE ACCIDENT.
Aircraft Information
Registered Owner (Current)
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# LAX91LA137