As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR CUTOUT AREA BS 1380 STRINGER 27R INTERCOSTAL WEB AND ATTACH ANGLE TO FUSELAGE SKIN HAS CORROSION. AREA EXPOSED AFTER REMOVAL OF ATTACH ANGLE FROM WEB TO FRAME. CORROSION BLENDED ON ATTACH ANGLE WAS FOUND WITHIN LIMITS IAW SRM 53-60-15. CORROSION ON INTERCOSTAL WAS 100% MATERIAL LOSS. REMOVED AND REPLACED THE INTERCOSTAL IAW DWG 146N8522, REV E.