NTSB Identification: LAX85LA264.
The docket is stored on NTSB microfiche number 29530.
Accident occurred Thursday, May 30, 1985 in SAN JOSE, CA
Aircraft: Beech 65-A90, registration: N22WC
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

WHILE LANDING THE RIGHT MAIN LANDING GEAR OF THE AIRCRAFT SEPERATED WHEN THE UPPER TORQUE KNEE LINK FAILED. AFTER THE GEAR SEPARATED THE AIRCRAFT SKIDDED OFF THE RIGHT SIDE OF THE RUNWAY COMING TO REST IN A GRASS AREA. METALLURGICAL EXAMINATION OF THE FAILED TORQUE KNEE REVEALED IT FAILED DUE TO FATIGUE CRACKING WHICH WAS CAUSED BY GOUGES IN THE SURFACE OF THE LINK WHICH CAUSED STRESS CONCENTRATIONS. THE GOUGES HAD BEEN PAINTED OVER. THE AIRCRAFT WAS MAINTAINED IN ACCORDANCE WITH BEECH AIRCRAFT CORPORTATIONS PROGRESSIVE MAINTENANCE PROGRAM WHICH REQUIRES THE LANDING GEAR TORQUE KNEE LINKS TO BE REPLACED OR OVERHAULED EACH 5 YEARS OR 5000 CYCLES. NO RECORD OF THIS HAVING BEEN ACCOMPLISHED COULD BE FOUND IN THE AIRCRAFTS LOGBOOKS.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,MAIN GEAR ATTACHMENT..FATIGUE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,MAIN GEAR ATTACHMENT..FATIGUE


Contributing Factors

MAINTENANCE,INSPECTION..IMPROPER..OTHER MAINTENANCE PERSONNEL


Contributing Factors

LANDING GEAR,MAIN GEAR..SEPARATION

Index for May1985 | Index of months