What was found
DURING CLIMB THROUGH 4000 FT, THE CAPTAIN SIDE ATTITUDE INDICATOR FLAGGED "GYRO", THEN STARTED INDICATING A BANK TO THE LEFT. CAPTAIN CALLED THE FAILURE AND POSITIVE EXCHANGE OF CONTROLS OCCURRED BETWEEN PILOT AND CO PILOT. CO PILOTFLEW THE RETURN , INTERCEPTED THE ILS 2 AND SAFELY LANDED THE AIRCRAFT.