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 INTERCOSTAL FROM FS 38 TO FS 39 ON THE LEFT SIDE UNDER THE THRESHOLD WAS FOUND TO BE CORRODED BEYOND LIMITS. MAINTENANCE REMOVED AND REPLACED THE INTERCOSTAL FROM FS 38 TO FS 39 ON THE LEFT SIDE UNDER THE THRESHOLD IAW SRM 51-25-01. (M)