What was found
DURING RIB 5 INSPECTION, CORROSION WAS FOUND IN L/H MAIN LANDING GEAR RIB 5, FORWARD LUG. CORROSION WAS REMOVED BY OVERSIZING THE BORE DIAMETER TO 5.015" AND REWORKING THE LUG TO THICHNESS OF 2.237". THE LUG WAS CONFIRMED FREE OF CORROSION BY NDT INSPECTION (NIL FINDINGS), REPROTECTED LUG, OVERSIZED BUSHES, FABRICATED AND INSTALLED ALL IN ACCORDANCE WITH OPERATOR REPORTS AND REPAIR INSTRUCTIONS. THE OPERATOR DEVIATED FROM THE REPAIR INSTRUCTIONS BY MANUFACTURING LARGER DIAMETER BUSHES AND WORKED IT IAW EA 6-5710-142077 WING GEAR RIB 5 LUG BORE REWORK (LHS), SB A310-57-2090, EO 6-5710-7-5010. REF WORK INSTRUCTIONS R572-49121 ISSUE D AND REF MANUFACTURES RAS/BAE/1013736/2010. THIS A MAJOR REPAIR IAW FEDEX GMM 6-2-100.