What was found
(CAN) ON CLIMB OUT, CREW RECEIVED A (PAX DOOR LATCH) MESSAGE, AND THEN A (PASSENGER DOOR WARNING MESSAGE). CREW FOLLOWED QRH PROCEDURES AND COMPLETED AN UNEVENTFUL OVERWEIGHT LANDING. TROUBLESHOOTING FOUND BOLT P/N NAS6207-54D SEIZED IN BUSHING P/N NAS74A7E302P AS PART OF PASSENGER DOOR MID PIVOT ASSY. ALSO FOUND UPPER PIVOT ASSY 601R38383-1 VERY STIFF. IPC 52-11-02 FIG 2. BOTH FITTINGS AND ASSOCIATED HARDWARE REPLACED. DOOR RIGGED, FUNCTION TESTED AND RETURNED TO SERVICE.