As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN DOOR DIFFICULT TO OPEN FROM OUTSIDE. REMOVED FROM SERVICE. OPENED AND CLOSED MCD MULTIPLE TIMES AND FOUND TO BE SLIGHTLY STIFF. LUBED OUTSIDE DOOR MECHANISM. STIFFNESS GONE. OPERATIONS NORMAL. NO FURTHER DEFECTS NOTED. RETURNED TO SERVICE.