What was found
DURING AFT TRUNNION AD INSPECTION, FOUND THE RT WING MLG RIB 6 AFT BEARING LUG CRACKED. REMOVED AND REPLACED THE NR 6 RIB IAW ENGINEERING REPAIR AUTHORIZATION 570123-14AD. PERFORMED ALL SYSTEM AND OPERATIONAL CHECKS. AIRCRAFT OK FOR SERVICE IAW ERA 570123-14AD, REV ORIG.