What was found
(CAN) PILOT REPORTED ELEVATOR TRIM VERY STIFF WHILE IN FLIGHT, THEN FREE AFTER SEVERAL ATTEMPTS. MAINT INVESTIGATION REVEALED TRIM CABLE P/N 41734-78 SEPARATED AT THE TRIM SERVO P/N 1C469-6-498. CABLE WAS REPLACED AND SYSTEM RIGGED IAW MM 5-32. CABLE INSPECTION DID NOT REVEAL ANY UNUSUAL WEAR OR FRAYING AT THE SEPARATED ENDS. CABLE WAS SHREDDED AND APPEARED TO BE TORN APART. FURTHER INVESTIGATION BY AVIONICS REPAIR STATION REVEALED THAT THE ELEVATOR ELECTRIC/AP TRIM SERVO CLUTCH RELEASE MECHANISM WAS INTERMITTENT. SERVO WAS REPAIRED AND OPERATION CHECKED SERVICEABLE. (TC NR 20070621004)