As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON MCP CAPTAIN`S COURSE SELECTOR IS FROZEN ON 347. RESET IT AGAIN DURING DESCENT AND IT WORKED OK. ACFT GROUNDED. PERFORMED FIM TASK 22-11-803 MODE CONTROL PANEL TEST, ALL TEST PASSED. CPT COURSE WINDOW OPERATES NORMALLY. OK FOR CONTINUED SERVICE.