As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 3R (AFT PAX DOOR) VERY DIFFICULT TO OPEN AND CLOSED. FOUND GUIDE ARM ATTACH BOLTS TO DOOR LOOSE AND GUIDE ARM ROD ARM BEARING WORN AND SERPENTINE GUIDE PIN WORN. REPLACED GUIDE ARM AND RIGGED. DOOR STILL VERY HARD TO OPERATE. FOUND HANDLE MECHANISM VERY STIFF. WILL REQUIRE FURTHER TROUBLESHOOTING. REPLACED GUIDE ARM.