What was found
DURING CLIMBOUT FROM KTOL, CAPT'S RMI, GYRO FLAG, AND F/O'S GLIDESLOPE IN HSI, FLIGHT DIRECTOR IN ASI FLAG ALL IN VIEW. THE CREW RETURNED TO KTOL AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED SMART BOX. OPERATIONAL CHECK GOOD IAW DC8 MAINTENANCE MANUAL 34-20-0, 34-23-20, 34-31-0. AIRCRAFT WAS RETURNED TO SERVICE.