As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAP TRACK PART DID NOT FAIL, HOWEVER, SEVERE CORROSION WAS FOUND DURING AN ANNUAL INSPECTION AT A POTENTIALLY WEAK AREA ON THE PART. CORROSION FOUND WAS INTERGRANULAR AND WAS ON BOTH SIDES OF THE PART IN AFFECTED AREA. SUBMITTER SUGGESTS A CLOSE INSPECTION OF THESE FLAP TRACKS, AS COROSION HAD STARTED ON ALL 3 OF THE OTHER FLAP TRACKS ON THIS AIRCRAFT.