8/15/19  Pilot/Controller Glossary  g.  Altitude (at least 500 feet above the convention- al pattern).  h.  A “Roll-out” on final approach not less than 1/4  mile from the landing threshold and not less than 300  feet above the ground.  OVERLYING CENTER- The ARTCC facility that  is responsible for arrival/departure operations at a  specific terminal.  PCG O-4 