NAVIGATIONAL AND PROCEDURAL INFORMATION (Continued) Airport Beacons  Rotating or Flashing Isolated Locations VFR Checkpoints Underline indicates proper  name of VFR Checkpoint. VFR Waypoints  RNAV  Stand-Alone Collocated with VFR Checkpoint Obstruction Above 200’ & below 1000’ AGL  (above 299’ AGL in urban area) Under Construction (UC) or reported and  position/elevation unverified 1000’ and higher (AGL) Wind Turbine High-Intensity Obstruction Lights Less than 1000’ (AGL) 1000’ and higher (AGL) Wind Turbine Group obstruction Wind Turbines  High-intensity lights may operate part-time  or by proximity activation. Marine Lights With Characteristics of Light Red White Green Blue Orange Black Yellow Sector Fixed Single Occulting Group Occulting Composite Group Occulting Isophase Flashing Group Flashing Composite Group Flashing Quick Interrupted Quick Morse Code Fixed and Flashing Alternating Group Long Flash Group Quick Flashing Interrupted Quick Flashing Very Quick Flashing Group Very Quick Flashing Interrupted Very Quick Flashing Ultra Quick Flashing Interuppted Ultra Quick Flashing * Marine Lights are white unless otherwise noted. Alter- nating lights are red and white unless otherwise noted. Group Obstruction Above 200’ & below 1000’ AGL (above 299’ AGL in urban area) 1000’ and higher (AGL) At least two in group 1000’ and higher (AGL) Wind Turbines Wind Turbine Farms When highest wind turbine is unverified,  UC will be shown after MSL value. Maximum Elevation Figure (MEF) (see VFR Terms tab for explanation) Land Light 33 FAA Chart Users’ Guide - VFR Symbology - Sectional and Terminal Area Charts