As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 8059610) DURING TAKEOFF ROLL FLIGHT DECK DOOR OPENED AND WAS HARD TO CLOSE. PERFORMED INSPECTION OF FLIGHT DECK DOOR IAW B737 AMM 52-51, NO DEFECTS NOTED. PERFORMED FUNCTIONAL TEST OF FLIGHT DECK DOOR LATCHING SYSTEM IAW SAME AMM. TEST OK.