As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS IN BASE MAINTENANCE. TRAPPED WATER FOUND ON THE ELEVATOR HONEYCOMB CORE STRUCTURE UPPER SKIN PANEL LOCATED 13 INCH OUTBOARD FROM LIGHTNING STRIP 1 AND 10.5 IN FROM THE LEADING EDGE FASTENERS ON THE RIGHT HAND HORIZONTAL STABILIZER. REPAIRED RIGHT HAND ELEVATOR HONEYCOMB CORE STRUCTURE UPPER SKIN PANEL PER SRM 55-21-11-300-005 PAR2 A.