What was found
CAPT ADI DOES NOT DISPLAY PITCH INFORMATION. AFTER TAKEOFF ATTITUDE FLAG APPEARED. RESET C/B DID NOT HELP. FLAG RETRACTED ON ITS OWN AFTER 10 MIN. AFTER LANDING, ATTITUDE INDICATOR DOES NOT TEST NORMALLY. CHECKED CAPT ADI, WOULD NOT TEST. REMOVED AND REPLACED CAPT ADI AND REMOVED AND REPLACED NR 1 VG AS PRECAUTIONARY. TESTED BOTH COMPONENTS PER MM 34-22-21, OPS CHECK GOOD ON GROUND.