As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK AT AERO CORP, FOUND BELLY SKIN HAS DOUBLER DRILLED HOLES AT STA 328 BETWEEN STR 25 - STR 26. FABRICATED DOUBLER FROM 2024 T3 .050 INCH 12 INCHES BY 16 INCHES IAW B 737 SRM 53-30-3. INSTALLED IAW B 737 SRM 53-30-3, FIG 1. (X)