As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED FA REPORTS THAT DOOR 4L IS HARD TO ARM. STICKY SUBSTANCE ON DOOR. FOLLOWED MONITOR AND CHALLENGE PROCEDURES, REMOVED PAPER (DEBRIS) FROM 4L DOOR GIRT BAR AREA, CLEANED AND LUBED. DOOR ARMING AND GIRT ENGAGING OPERATES SMOOTHLY.