What was found
AFTER ARRIVING AT THE AIRCRAFT, WE ATTEMPTED TO OPEN THE MAIN CABIN DOOR. THE MAIN CABIN HANDLE WOULD ROTATE BUT THE DOOR WOULD NOT BUDGE. ACCESSED THE AIRCRAFT THROUGH THE BAGGAGE COMPARTMENT DOOR AND FOUND THE MAIN CABIN DOOR RELEASE HANDLE TO BE HALF WAY POSITION IN ITS TRAVEL. I MOVED THE HANDLE THE REST OF THE WAY AND THE DOOR RELEASED. WE THEN CLOSED THE DOOR AND THE OTHER CREWMEMBER ATTEMPTED TO AGAIN OPEN IT FROM THE OUTSIDE. WHEN THE EXTERIOR HANDLE WAS ROTATED, THE INTERIOR HANDLE WOULD MOVE HALF WAY IN ITS TRAVEL AND THE DOOR WOULD NOT RELEASE. CORRECTIVE ACTION: REPLACED CAM BEARING. OPS CHECK GOOD. IAW AMM TASK 52-11-00-720- 801.