As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A PREFLIGHT WALKAROUND, SURFACE CORROSION WAS OBSERVED ON THE VERTICAL STABILIZER AFT SECTION. AFTER CLOSER INSPECTION SEVERE DELAMINATION WAS SEEN ON THE AFT VERTICAL SUPPORT ANGLES AND AFT STAB BULKHEAD SECTION. THE RUDDER TRIM TAB BRACKET ALSO HAD SIGNIFICANT DELAMINATION AS WELL.