What was found
YYC C4 , LEFT HAND UPPER WING PANEL 521AT HAS FRETTING CORROSION IN COUNTER SINK HOLES. REPAIRED IAW RD 8-57-1420, ISSUE 3.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
YYC C4 , LEFT HAND UPPER WING PANEL 521AT HAS FRETTING CORROSION IN COUNTER SINK HOLES. REPAIRED IAW RD 8-57-1420, ISSUE 3.