GENERAL INFORMATION HELICOPTER ROUTE CHARTS FAA Chart Users’ Guide - VFR Chart Symbology - Helicopter Charts 49 When lighting is lacking, the respective character is replaced by a dash. Lighting codes refer to runway edge lights and may not represent the longest runway or full length lighting. Dashes are not shown on  heliports or helipads unless additional information follows the elevation (e.g. UNICOM, CTAF). Helicopter Route Charts  are three-color charts that depict current aeronautical information useful to helicopter pilots navigating in  areas with high concentrations of helicopter activity. Information depicted includes helicopter routes, four classes of heliports with  associated frequency and lighting capabilities, NAVAIDS, and obstructions. In addition, pictorial symbols, roads, and easily-identified  geographical features are portrayed. The scale is 1:125,000. These charts are updated every three years or as needed to accommo- date major changes. Landplane All recognizable runways, including some which may be closed, are  shown for visual identification. Public Private Unverified Abandoned Seaplane  Heliport Heliports public and private Medical Center Helipads located at major airports (when requested) Ultralight Flight Park Airport Data Grouping Boxed airport name indicates airport for which a Special Traffic  Rule has been established. (Pvt): Non-public use having emergency or landmark value. “OBJECTIONABLE”: This airport may adversely affect airspace  use. Flight Service Station on field Airspace where fixed wing special visual flight  rules operations are prohibited (shown above  airport name) FAR 91 Indicates FAR 93 Special Air Traffic Rules and  Airport Traffic Location Idendtifier ICAO Location Identifier Control Tower (CT) - primary frequency Star indicates operation part-time. See tower  frequencies tabulation for hours of operation Automated Terminal  Information Service Automated Surface Weather Observing Systems (shown when full-time ATIS is not  available). Some ASOS/AWOS  facilities may not be located at airports. Elevation in feet Lighting in operation Sunset to Sunshine Lighting limitations exists, refer  to Chart Supplement UNICOM - Aeronautical advisory station Follows the Common Traffic Advisory  Frequency (CTAF) Unverified Heliport Airport of Entry AIRPORTS