As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: THE COCKPIT DOOR WAS CLOSED AND LOCKED UPON ARRIVAL. UNABLE TO OPEN DOOR WITH CODE DESPITE MULTIPLE ATTEMPTS. CALLED MAINTENANCETO DISASSEMBLE THE DOOR TO GAIN ENTRY. RESET ELECTRIC POWER TO FLIGHT DECK DOOR ELECTRIC LATCH. PER AMM52-51-03. OPERATIONAL CHECK GOOD.