As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED, ENROUTE AT APPROXIMATELY 300 FEET BELOW LEVEL OFF AT 11,000 FEET THE AUTOPILOT WAS DISCONNECTED AND FOUND INVERTER INOPERATIVE. SELECTED NR 2 INVERTER, DID NOT WORK. DECLARED AND EMERGENCY AND LANDED WITHOUT FURTHER PROBLEMS. MAINTENANCE DISCOVERED POOR CONNECTION AND STUCK RELAY K006 AND K007 IN NOSE AVIONICS BAY IN JUNCTION BOX 01. CLEANED RELAY CONNECTIONS AND CYCLED RELAYS. FUNCTIONAL CHECK SATISFACTORY.