As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YVR - MAJOR REPAIR - DURING C-13 CHECK A 8 INCH AREA OF CORROSION WAS FOUND ON WEB AT LOWER INTERCOASTAL AFT CARGO DOORWAY OPPOSITE OF FLOOR TRACK BS 727A TO BS 727B, STR 24L. MAINTENANCE REMOVED AND REPLACED LOWER INTERCOASTAL FLOOR TRACK AT BS 727A TO BS 727B, STR 24L IAW DWG 69-49708 SHT 1, AND 65-46592 SHT 7.