What was found
DURING C-CHECK, FOUND LEFT WING, LOWER FLANGE OF WING RIB AT WS 686 CRACKED AT STRINGER 6 AND STRINGER 8. MARKED PENETRANT INSPECTION PER OHM 20-20-2 PER SB 727-57-0127. STOP DRILLED EACH END OF CRACKS AS PER SRM 51-10-1. INSTALLED WING RIB REPAIR AS PER SRM 57-10-5 7075-T6 .090 LOT NR 93110848 10 INCH BY 4 INCH AT LW LOWER FLANGE WING BS AT WS 686 AT STRINGER 6. INSTALLED WING IN SPAR RIB REPAIR AS PER SRM 57-10-5 7075-T6 .090 LOT NR 93110848 10 INCH BY 4 INCH AT LW LOWER FLANGE WING RIB AT WS 686 AT STRINGER 8.