As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PRE-DEPARTURE CHECK WAS COMPLETED. CREW WAS UNABLE TO OPEN COCKPIT DOOR. FOUND DOOR LOCK PLUNGER BROKEN IN LOCKED POSITION. INSTALLED SLIDE LOCK ON FLIGHT COMPARTMENT SIDE OF COCKPIT DOOR. VERIFIED THAT LOCK WAS OPERABLE FROM INSIDE THE COCKPIT. REPLACED COCKPIT DOOR HANDLE IAW REA D852-47190. COCKPIT DOOR HANDLE OPS CHECKED GOOD WHEN DOOR OPENED AND CLOSED.