As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: MAIN CABIN DOOR HARD TO CLOSE AND MAKING CRACKING NOISES WHEN TRYING TO CLOSE. MAINTENANCE FOUND THE UPPER HINGE ARM FITTING WORN ALLOWING THE BUSHING TO MIGRATE AND REPLACED THE HINGE ARM FITTING PER AMM 52-11-31. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.