As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - REAR PRESSURE BULKHEAD BELOW CABIN FLOOR IN CARGO BAY, HAS A CRACK IN THE BULKHEAD WEB UNDER LOWER FLOOR OF HORIZIONTAL BEAM III 6 OUTBOARD OF BL 425R. LENGTH OF CRACK APPROX 1.75 . REPAIRED CRACK ON REAR PRESSURE BULKHEAD ON BEAM III PER FOKKER SRM 53-02-18 PAGES 38 AND 39.