As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE. TRAPPED WATER INDICATION ON RUDDER BETWEEN BR 1 TO BR 2 AT 23 INCHES TO BR 1 AT 5 INCHES FROM LEADING EDGE FASTENER ROW, LEFT HAND SHELL AROUND THE LOWER FORWARD HOISTING POINT ON VERTICAL STABILIZER. REPAIRED RUDDER PER EA 277362.