As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED INSPECTION, THE CARGO DOOR WAS X-RAYED AND VISUALLY INSPECTED. CRACKS WERE FOUND IN THE FWD & AFT LOWER CORNER 'Z' CHANNELS, 3 LOWER FORMERS AT FRAMES 12 & 14 WERE FOUND CRACKED. THE 'Z' CHANNELS WERE REPAIRED AND THE LOWER FORMERS WERE REPLACED. FAA FORM 337 COMPLETED FOR THIS REPAIR.