As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT DECK DOOR WHEN LOCKED VERY DIFFICULT TO OPEN -HANDLE WILL NOT MOVE LOCKING PIN /BOLT-VERY STICKY. MAINTENANCE CLEANED AND ADJUSTED FLIGHT DECK DOOR LOCKS PER AMM 52-71-00-717-001. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.