What was found
IND - ON TAKEOFF ROLL IN DFW, AIRCRAFT PULLED EXCESSIVELY TO RIGHT, AIRCRAFT CONTROLLED TAKEOFF ROLL AND DEPARTED NORMALLY. ON APPROACH WHEN LANDING GEAR WAS IN DOWN POSITION NOSE GEAR INDICATION DID NOT SHOW GREEN. CREW ACCOMPLISHED A TOWER FLY-BY TO CONFIRM GEAR DOWN. REPLACED RIGHT NOSE LANDING GEAR STEERING ACTUATOR AND STEERING CONTROL VALVE. REPLACED NOSE LANDING GEAR INDICATOR BULBS. SYSTEM GROUND CHECK NORMAL OPERATION.