What was found
FLT 412 - ATL-ATL - AIR RETURN, FIRST OFFICERS ADI QUIT WORKING. REMOVED AND REPLACED FIRST OFFICERS VERTICAL GYRO. OPS IAW 34-20 GOOD. NO DEFECTS NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT 412 - ATL-ATL - AIR RETURN, FIRST OFFICERS ADI QUIT WORKING. REMOVED AND REPLACED FIRST OFFICERS VERTICAL GYRO. OPS IAW 34-20 GOOD. NO DEFECTS NOTED.