What was found
DURING C-CHECK, FOUND STATION 601 WING RIB LOWER FLANGE HAS CRACKS AT NR 6 AND NR 8 STRINGER LOCATIONS. STOP DRILLED CRACKS AT NR 6 AND NR 8 STRINGER TO RIB LOCATION, ON RIB LOWER FLANGE STATION 601.5 PER SB 727-57-0127 FIG 2. NO CRACKS PROGRESSED AFTER STOP DRILLED. FABRICATED DOUBLER REPAIRS TWO EACH 10 INCH BY 4.5 INCH 7075-T6 .090 LOT NR 233-601 PO NR 93110848 AND 12 INCH BY 4.5 INCH 7075-T6 .090 LOT NR 1233-601 PO NR 93110848. INSTALLED DOUBLER REPAIRS AS PER SRM 57-10-5 FIG 2.