What was found
YYC - C4 FORE RUDDER FORWARD UPPER HINGE SAFETY BRACKET HAS FRETTING CORROSION FOUND ON UPPER PLATE. REPAIRED IAW RD 8-55-074, ISSUE 2.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
YYC - C4 FORE RUDDER FORWARD UPPER HINGE SAFETY BRACKET HAS FRETTING CORROSION FOUND ON UPPER PLATE. REPAIRED IAW RD 8-55-074, ISSUE 2.