As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION BEYOND MFR LIMITS ON STRINGERS AND INTERCOSTALS BETWEEN FS262 AND FS288 BETWEEN WL -4.68 AND -10.28. FOLLOWING PART NUMBERS WERE REMOVED AND REPLACED WITH NEW IAW DHC SRM. C6FS1620-29, C6FS1620-39, C6FS1620-31, C6FS2448-39, C6FS1620-37.