As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TAKEOFF OF FLIGHT 1026 MKE-CVG THE CAPTAINS ALTIMETER FLAGGED AND THE ALTITUDE SELECT WENT BLANK. THE CREW CYCLE THE CIRCUIT BREAKER BUT THE PROBLEM REMAINED. THE CREW MADE AN AIR-TURN-BACK TO MKE. MAINTENANCE RETURNED THE AIRCRAFT TO SERVICE WITH NO FURTHER DEFECTS.