As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A C-CHECK IN YUL, THE INTERCOSTALS FROM FS 36 TO FS 38 UNDER THE LEFT AND RIGHT THRESHOLDS WERE FOUND TO BE CORRODED BEYOND LIMITS. MAINTENANCE REMOVED AND REPLACED THE INTERCOSTALS FROM FS 36 TO FS 38 UNDER THE LEFT AND RIGHT THRESHOLDS IAW SRM 51-25-01. (M)