As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, FOUND LT WING TOP SIDE APPROXIMATELY 40 INCHES OUTBOARD OF NR 1 SPOILER WITH CORROSION SKIN BULGE AND 2 EACH RIVETS HEADS POPPED. REMOVED CORROSION IAW B 737 SRM 51-10-8, TREATED ALODINED, BARE METAL IAW B 737 SRM 51-10-2. FABRICATED DOUBLER. ALODINED AND PRIMED IAW 737 SRM 57-30-2. SEALED DOUBLER. INSTALLED DOUBLER IAW 737 SRM 57-50-3. (X)