As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE CARRYING OUT A DETAIL INSPECTION OF THE CARGO DOOR INTERNAL STRUCTURE AS PER TASK CARD RJ2-52-830-506 DURING A "C" CHECK VISIT, A CRACK WAS OBSERVED IN THE INTERCOSTAL AT FS605.00 BETWEEN WL73.00 AND WL82.88. THE CRACKS WERE NOTED BY FOUR RIVET HOLE LOCATIONS. THE INTERCOSTAL MEMBER WAS REMOVED AND REPLACED IN ACCORDANCE WITH SRM 51-10-06.