Summary
On June 30, 1988, a Helio HST-550A (N9991F) was involved in an accident near Perris, CA. The accident resulted in 1 fatal injury. The aircraft was destroyed.
The National Transportation Safety Board determined the probable cause of this accident to be: FAILURE OF THE ELECTRICAL STABILIZER TRIM CONTROL THAT RESULTED IN AN UNCOMMANDED FULL NOSE DOWN ELEVATOR TRIM COMMAND.
This accident is documented in NTSB report LAX88FA241. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N9991F.
Accident Details
Probable Cause and Findings
FAILURE OF THE ELECTRICAL STABILIZER TRIM CONTROL THAT RESULTED IN AN UNCOMMANDED FULL NOSE DOWN ELEVATOR TRIM COMMAND.
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# LAX88FA241