What was found
YYC - LEFTHAND WING LEFTHAND PANEL 523AT BOTTOM SURFACE OF PANEL PITTING AND FRETTING CORROSION AROUND PANEL ATTACH HOLES. REPAIRED IAW RD 8/4-57-421.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
YYC - LEFTHAND WING LEFTHAND PANEL 523AT BOTTOM SURFACE OF PANEL PITTING AND FRETTING CORROSION AROUND PANEL ATTACH HOLES. REPAIRED IAW RD 8/4-57-421.