As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MINOR REPAIR - DURING C-13 CHECK A .5 INCH CRACK WAS FOUND ON RT WING LEADING EDGE SKIN PANEL WS 0 TO WS 12. MAINTENANCE REMOVED CRACKED RT WING LEADING EDGE SKIN PANEL WS 0 TO WS 12; FABRICATED NEW REPLACEMENT SKIN PER DWG 65C26701; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02 FIG 3 SHEET 1 FIG 4, SHEET 1 & FIG 8, SHEET 1.