What was found
CAPT ADI INOP WITH ALT FLAG, ROLL LIGHT ILLUMINATED. TEST SWITCH RESULTED IN INDICATOR SPINNING AT HIGH SPEED IN ROLL DIRECTION, AUX GYRO NO HELP. AIR TURNBACK TO ATL AT 1420. C/A REPLACED CAPT ADI, FUNCTIONS NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CAPT ADI INOP WITH ALT FLAG, ROLL LIGHT ILLUMINATED. TEST SWITCH RESULTED IN INDICATOR SPINNING AT HIGH SPEED IN ROLL DIRECTION, AUX GYRO NO HELP. AIR TURNBACK TO ATL AT 1420. C/A REPLACED CAPT ADI, FUNCTIONS NORMAL.