As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, FOUND BS 360 BELOW STR 16L HAS REPAIR DOUBLER NOT IAW B 737 SRM 53-30-3 FIG 8. CUT OUT CRACKED AREA OF SKIN IAW 737 SRM 53-30-3. FABRICATED 1 EACH FILLER AND DOUBLER IAW 53-30-3. ALODINED AND PRIMED IAW SRM 52-10-2 AND MM 51-21-0. INSTALLED DOUBLER AND FILLER IAW 737 53-30-3 AND AERO RES NR 04500. (X)