As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-13 CHECK, FOUND CORROSION IN FORWARD CARGO PIT ON 20 NUT PLATES LOCATED ON THRESHOLD WEB FROM STA 450 TO STA 490. MX FOUND CORROSION TO BE OUT OF LIMITS IAW BOEING 737-300 SRM 53-30-15-1 FIG 101. REMOVED THRESHOLD WEB FROM STA 450 TO STA 490 AND FABRICATED NEW FORWARD PIT THRESHOLD WEB IAW BOEING 737-300 SRM 51-40-05-0 FIG 2 AND BOEING DWG 65-20726. INSTALLED FABRICATED REPAIR PARTS IAW BOEING 737-300 SRM 51-40-05 FIG 2.