As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE AN AREA OF CORROSION WAS VISUALLY IDENTIFIED ON THE TOP EDGE OF THE VERTICAL LEG OF THE FORWARD LEFT HAND LOWER AFT WING FITTING. CORROSION MEASURES APPROXIMATELY 1.25 INCHES LONG, WITH A MAX DEPTH OF APPROXIMATELY .017 INCHES DEEP AND IS CONSISTENT WITH CORROSION DAMAGE FOUND ON THE SAME FITTING ON PAST AIRCRAFT. THIS FITTING WILL BE REMOVED AND REPLACED USING NEW PARTS.