As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DOOR: MAIN ENTRY DOOR IS VERY DIFFICULT TO OPEN OR CLOSE. WITH DOOR OPEN, MECHANISM WORKS SMOOTHLY, BUT WHEN CLOSING OR OPENING DOOR IT BINDS AND GET VERY DIFFICULT // SIGNOFF// FOUND DOOR PINS TO HAVE THE WRONG TYPE LUBRICANT(DRY FILM) ON THEM. CLEANED DOOR PINS AND APPLIED MOLYKOTE 33 LUBRICANT ON ALL DOOR PINS IAW EMB300 MM 52-11-21-640-801A. OPS CHECKS GOOD.