As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - ON FLIGHT NUMBER 2244, IN CRUISE MOST FLIGHT GUIDANCE COMPUTER BUTTONS WERE INOPERATIVE. AUXILARY BUTTONS WORKED. WHEN NAV SEL BUTTON WAS PUSHED IN ENGAGED THE AUTO PILOT. MAINTENANCE REMOVED AND REPLACED FLIGHT GUIDANCE COMPUTER CONTROL PANEL. OPERATIONAL TEST GOOD. AIRCRAFT RETURNED TO SERVICE.