As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FORWARD BOARDING DOOR MAKES LOUD SQUEALS WHEN OPENING. MAINTENANCE CLEANED AND LUBRICATED HINGE ARM SUPPORT FITTINGS PER AMM 12-22-52. A SSTISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES OR NOISES NOTED.