What was found
THE MAIN CABIN DOOR AFT HINGE PIN PARTIALLY SEIZED IN THE HINGE HALF MOUNTED ON THE DOOR. THE DOOR WAS VERY HARD TO OPEN AND CLOSE AND MADE A LOUD NOISE WHEN OPENING. THE HINGE PIN HAD TO BE CUT TO BE REMOVED FROM THE DOOR. A VISUAL AND EDDY CURRENT INSPECTION REVEALED NO DISCREPANCIES WITH THE HINGE HALF MOUNTED ON THE FUSELAGE. A VISUAL INSPECTION OF THE FORWARD HINGE AND HINGE PIN REVEALED NO DISCREPANCIES. THE AFT HINGE HALF, P/N 500-10035-402, MOUNTED ON THE DOOR WAS REPLACED, ALONG WITH THE FORWARD AND AFT HINGE PINS P/N 500-10022-001. THE NEW PINS, P/N 500-10022-003 ARE SLIGHTLY SMALLER IN DIAMETER TO HELP PREVENT SEIZING IN THE FUTURE.