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 DIFFICULT TO OPEN FROM INSIDE FLIGHT DECK. TURNING DOOR KNOB WILL NOT FULLY SLIDE LATCH/PIN TO UNLOCK DOOR. MAINTENANCE LUBED THE DOOR LATCH AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.