As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER COUNTER BALANCE CORRODED AS SEEN FROM GROUND. CLOSER INSP REVEALED CORROSION AT MATING SURFACE BETWEEN WEIGHT AND RUDDER / REMOVED AND REPLACED RUDDER COUNTER BALANCE PER CMM 55-40-09. NO CORROSION FOUND AT WEIGHT MOUNTING SURFACE