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 UPPER SKIN PANEL HONEYCOMB CORE CELLS INBOARD FROM RIB 10, FROM TRAILING EDGE ON LT HORIZONTAL STABILIZER. REPAIRED UPPER SKIN PANEL HONEYCOMB CORE PER SRM 55-21-11-300-005.