As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, FOUND LEFT WING TOP SIDE APPROX 40 INCHES OUTBOARD OF NR 1 SPOILER CORROSION SKIN BULGE AND 2 RIVETS HEADS POPPED. REMOVED CORROSION IAW B737 SRM 51-10-6, TREATED ALODINED, BARE METAL IAW B737 SRM 51-10-2. FABRICATED DOUBLER. ALODINED AND PRIMED IAW 737 SRM 57-30-2. SEALED DOUBLER. INSTALLED DOUBLER IAW 737 SRM 57-30-3. (M)