61-41 - Airport Reference Point, Established Elevation and Specified Radii LAST AMENDED 10/25/1993 The #airport reference point# (or #points#), #established airport elevation#, and radii for the #horizontal# and #conical surfaces# for each such major airport shall be established as set forth in the following table: APPLICATION TO MAJOR AIRPORTS #Airport Reference LaGuardia John F. Kennedy U.S. Naval Air Points(s)# International Station (Floyd Bennett Field) Primary point: North Latitude 40° 46’29.0" 40° 38’19.4" 40° 35’33.0" West Longitude 73° 52’20.0" 73° 46’21.8" 73° 53’27.5" Secondary Point: North Latitude - 40° 38’57.9" - West Longitude - 73° 47’47.9" - #Established airport 20 12 15 elevation# (feet above mean sea level) #Horizontal surface# 10,000 13,000 11,500 radius, measured in feet from #airport reference point(s)# #Conical surface# radius, 15,000 20,000 18,500 measured in feet from #airport reference point(s)#