Executive summary
The right rear main undercarriage of Boeing 767-200 aircraft, registration ZK-NBF, landed at Los Angeles Airport on 6 September 1993. The safety issues discussed are the effectiveness of post-runway excursion of inspections of the undercarriage, the inspection of main undercarriage assemblies which had already been involved in runway excursion incidents and the marking for identification of main undercarriage axles.
Related Recommendations
Prepare and distribute a letter or bulletin to advise operators how to locate the part and serial number of B767 main undercarriage axles.
Take the appropriate steps to ensure the main undercarriage axle part and serial number remains accessible visually after all protective processes have been completed.
Consider the need to advise any B767 operator who has main undercarriage assembled in service that have been involved in runway excursions onto unprepared surfaces to dismantle such assembled and test them for evidence of corrosion and/or cracking.
Review the current maintenance Manual Inspections required for Boeing 767 undercarriage components which have been involved in "hard landings or high drag/side load landing conditions" on unprepared surfaces with a view to ensure the inspections provide for the removal of any foreign matter which may have become lodged between components of the assemblies.