As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT DOOR NOT LOCKING IN FLIGHT WORKS FINE ON THE GROUND HAD TO MANUALLY MOVE LOCK STP TO CLOSE DOOR IN FLIGHT. REMOVED AND REINSTALLED COCKPIT-DOOR ELECTROMECHANICAL LATCH BULKHEAD ASSEMBLY IAW AMM 52-51-03. ADJUSTMENT AND OPERATIONAL CHECK GOOD.