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 INDICATION ON ELEVATOR AT HONEYCOMB CORE STRUCTURE UPPER SKIN PANEL LOCATED 4.0 INCH OUTBOARD FROM ELEVATOR RIB 4 AND 4.250 IN FROM TRAILING EDGE ON LEFT HAND HORIZONTAL STABILIZER. REPAIRED ELEVATOR UPPER SKIN PANEL PER SRM 55-21-11-300-005.