What was found
MSP - FLT 401 - AIR RETURN, NO EMERGENCY DECLARED, LANDING UNEVENTFUL. ATTITUDE AND HEADING FLAGS ON CAPTAIN'S AND F/O'S ADI'S, HSI'S AND RMI'S ONE MINUTES AFTER TAKEOFF. RESET NR 1 IRS AC CIRCUIT BREAKER, REALIGNED IRS SYSTEM, PERFORMED BITE TEST PER 22-05-00. SYSTEM PASSES. RECHECKED SYSTEM UPON ARRIVAL MCI, NO DISCREPANCIES NOTED. NO FURTHER FLIGHT REMARKS. (M)