As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ACFT REPORTED CORROSION BETWEEN THE FLAP TRACK NR 3 AND FLAP TRACK SUPPORT BEAM. ON IDENTIFYING THE CORROSION, THE BEAM WAS BLENDED TO DEPTHS UP TO 0.01 AND IN COMBINATION WITH ACFT VIBRATIONS RESULTED IN CRACKING. A TRIAGE WAS CONDUCTED ON THE ISSUE AND THE RISK WAS DETERMINED TO BE LOW.