Category , DECISION HEIGHT ( DH) ,RVR CAT I,60 Meters,Visibility not less than 800 m RVR not less than 550 m CAT II,60 to 30 Meters,350 m CAT IIIA,30 Meter or Less,Not less than 200m CAT IIIB,15 Meter or Less,RVR between 200m to 50m CAT IIIC,0,No RVR Limitation Blind Landing CATIIIC approach is a zero-zero approach