A320
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Aircraft Aircraft Damaged; General Maintenance Action
Human Factors; Procedure
I am writing this statement in regards to an Airbus 320 aircraft. The Aircraft is currently undergoing a C-Check at ZZZ Hangar. During the preliminary Inspection; unusual wear was found on both Left and Right Main Landing Gear Door Fittings. Both doors were removed in order to effect repairs. While removing both doors; they were both found to be missing the Shim material that is installed on/around the hinge pin/bolt area. This is done so that during the final 'rig' on installation; the doors will fair correctly with the Fuselage along with reducing/eliminating any fore and aft play about the hinge centerline. It is believed that the lack of having shims installed contributed to the wear that occurred. Multiple structural parts were damaged beyond limits and had to be replaced with new parts. While the Doors were off the Aircraft; it was also discovered that one of the Hinge fitting fastener holes in the Keel beam was not within specifications; 'oblong'; these fasteners secure the door hinge fitting to the Keel beam. Currently our Air Carrier Engineers are in talks with Airbus EG in order to adequately address the mis-drilled hole.
An Aircraft Maintenance Technician (AMT) reports that both left and right Main Landing Gear (MLG) door hinge fittings were found with unusual wear on an A320 aircraft. Multiple structural parts were damaged beyond limits due to missing shim material on/around the MLG door hinge pin/bolt areas.