As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-1 CHECK INSPECTION, FOUND LOWER AREA OF FRAME STA 1600 CORRODED FROM LONGERON 35L TO LONGERON 34R. REMOVED CORRODED AREA AND INSTALLED ZEE FRAME REPAIR IAW DC8 SRM 53-2-0 FIGURE 2. INSTALLED FASTENER IAW DC8 SRM 51-1-20D AND 51-1-21 ALODINED AND PRIME IAW DC8 SRM 51-1-8. CORROSION CARD NR 5600-0551. NON-ROUTINE TASK CARD NR 91562, LEVEL 2.