As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TROUBLESHOOTING OF KING KAP-140 AUTOPILOT SYSTEM, FOUND AUTOPILOT CIRCUIT BREAKER TO BE THE ''NON-PULLABLE'' TYPE CONTRARY TO THE PILOT OPERATING HANDBOOK EMERGENCY PROCEDURES FOR AUTOPILOT RUNAWAY **TONY, ISAAC PUT ENG IN SYS**TRIM INDICATION. UPON FLEET INSPECTION OF AIRCRAFT OF SAME MODEL, FOUND SAME SITUATION WITH THE INCORRECT AUTOPILOT CIRCUIT BREAKER INSTALLED IN S/N 20608046 AND S/N 20608048. (X)