What was found
DURING ACCOMPLISHMENT OF S/B 777-27A0071, THE FOLLOWING DEFECTS WERE FOUND DUE TO POOR MACHINING DURING FACTORY BUILD. NR 1 T/E FLAP DRIVE ARM ASSY FWD JOINT 1A AND WING SUPPORT BRACKET MACHINED BEYOND S/B LIMITS. NR 2 T/E FLAP DRIVE ARM ASSY AFT JOINT 2B MACHINED BEYOND S/B LIMITS. NR 3 T/E FLAP AFT TENSION BEAM FWD OUTER BUSHING MIGRATING. DURING REPAIR 3 OUT OF 4 BORES FOUND CORRODED. NR 6 T/E FLAP COMPRESSION STRUT ASSY JOINT 6Y OUT/BD FITTING MACHINED BEYOND S/B LIMITS. DEFECT RECTIFICATION DETAILS: ALL BUSHINGS REPLACED IAW S/B. SERVICE ORDERS 51723782, 51723538, 51723733, 51723387, 51724094 REFER TO SERVICE ORDERS FOR PART NUMBER DETAILS. ALSO DURING AD 777-27A0017 INSPECTION OF NR 6 FLAP SUPPORT MECHANISM. INBOARD UPPER FAIRING LINK BUSH FOUND TO HAVE MIGRATED. DEFECT RECTIFICATION DETAILS: BUSHING REPLACED IAW CMM 27-57-84 SVO 51724396