What was found
AT C CHECK, LEFT WING TIP AFT O/B EDGE AREA CRACKED IN TWO PLACES. REMOVED LEFT WING TIP OUTBOARD EDGE FOR REPAIR IAW SRM 51-30-2. STOP DRILLED CRACK AT TWO PLACES IAW SRM 51-10-1, PERFORMED HFEC IAW NDT PART 68-00-00 FIG 4. NO CRACKS NOTED BEYOND STOP DRILL, ALODINED AND PRIMED IAW SRM 51-10-2. INSTALLED REPAIR AT LEFT WING TIP AFT O/B EDGE PER SME 57-20-5 FIG 2 USING 7075T6 .050 24 BY 8, N/R 1126.