What was found
MAIN CABIN DOOR HEAVY TO CLOSE. CABIN DOOR MAKES NUMEROUS CREAKING NOISES AS IT CLOSES. REMOVED AND REPLACED BOTH LUBRICATED SPRINGS DUE TO BROKEN AND CRACKED SPRINGS. RIGGED CABLE TENSIONS, OPERATIONS CHECK GOOD, DOOR CLOSES MUCH EASIER. ALL WORK DONE, IAW CH 52-10-50 OF 680 MODEL.