Summary
On May 04, 1991, a Hiller UH-12E (N4414) was involved in an incident near Delano, 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: THAT THE PILOT IMPROPERLY PERFORMED THE AUTOROTATION BY MISJUDGING THE FLARE ALTITUDE. CONTRIBUTING TO THIS ACCIDENT WAS THE TOTAL FAILURE OF THE FREEWHEELING SPRAG CLUTCH DUE TO EXCESSIVE WEAR AND THE SOFT DIRT TERRAIN.
This incident is documented in NTSB report LAX91LA191. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N4414.
Accident Details
Probable Cause and Findings
THAT THE PILOT IMPROPERLY PERFORMED THE AUTOROTATION BY MISJUDGING THE FLARE ALTITUDE. CONTRIBUTING TO THIS ACCIDENT WAS THE TOTAL FAILURE OF THE FREEWHEELING SPRAG CLUTCH DUE TO EXCESSIVE WEAR AND THE SOFT DIRT TERRAIN.
Aircraft Information
Registered Owner (Historical)
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# LAX91LA191