As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED RT ENGINE THROTTLE STICKING AT 30 INCHES MP. UNABLE TO RETARD THROTTLE TO IDLE. UPON MAINTENANCE INSPECTION, CABLE SLEEVE AT ENGINE HAD COME DISLODGED FROM PRIMARY HOUSING AND WAS KINKING CABLE WHICH PREVENTED RETARDING OF THROTTLE. SLEEVE WAS RE-SWEGED INTO HOUSING AND OPS CHECKED GOOD. CABLE WAS REPLACED DURING ROUTINE MAINTENANCE THIS DATE FOLLOWING RETURN TO MAINTENANCE BASE.