As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - C4 CHECK - RIGHT OUTBOARD DIAPHRAM HAS A SUSPECTED CRACK AT LOWER END NEAR LOCK FASTENER. REMOVED DIAPHRAM AND ASSOCIATED WEB IAW Q400 SRM 51-42-05. LOCATED AND DRILLED/DEBURRED AND INSTALLED FASTENERS COVERED BY AFT WEB AND INBOARD SOLID RIVETS IAW Q400 SRM 51-40-15, 51-42-05. INSTALLED AFT WEB AND FINISHED INSTALLATION OF DIAPHRAM IAW SRM 51-40-15, 51-42-05.