As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WING CENTER SECTION R/H SIDE AT STA. 639 STR.17R HAS CORROSIONON SILL ANGLE. GROUNDED - YES. REMOVED CORROSION ORIG .071, REMAIN .058 LOSS OF .013 WITH CORROSION STILL EVIDENT. FOUND OUT OF LIMITS IAW B737-800 SRM 53-40-13. REMOVED SILL ANGLE IAW B737-800 SRM 51-40-02. ALL OTHER WORK ACCOMPLISHED ON ASA CARD #G1774110.