Summary
On October 09, 1989, a Boeing 757-251 (N512US) was involved in an incident near San Francisco, CA. All 147 people aboard were uninjured. The aircraft sustained minor damage.
The National Transportation Safety Board determined the probable cause of this incident to be: THE EXTREME WEAR AND EVENTUAL FAILURE OF A TORQUE TUBE IN THE INBOARD TRAILING EDGE FLAP SYSTEM. INSPECTION AND LUBRICATION INTERVALS WERE A FACTOR, AS WAS THE PHYSICAL LOCATION OF THE TORQUE TUBE WITH REFERENCE TO EXTERNAL FACTORS.
This incident is documented in NTSB report CHI90IA006. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N512US.
Accident Details
Probable Cause and Findings
THE EXTREME WEAR AND EVENTUAL FAILURE OF A TORQUE TUBE IN THE INBOARD TRAILING EDGE FLAP SYSTEM. INSPECTION AND LUBRICATION INTERVALS WERE A FACTOR, AS WAS THE PHYSICAL LOCATION OF THE TORQUE TUBE WITH REFERENCE TO EXTERNAL FACTORS.
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# CHI90IA006