As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT IS IN BASE MAINTENANCE. TRAPPED WATER INDICATION FOUND ON ELEVATOR UPPER SKIN PANEL HONEYCOMB CORE CELLS. LOCATED 54.5 INCHES INBOARD FROM RIB10 AND 3.4 INCHES FROM TRAILING EDGE, ON RIGHT HAND HORIZONTAL STABILIZER. REPAIRED RIGHT HAND ELEVATOR PER SRM 55-21-11-300-004 PAR 2A.