Airports marked "Pvt" immediately following the airport name are not for public use, but otherwise meet the criteria for  charting as specified above. Runway length is the length of the longest active runway (including displaced thresholds but excluding overruns) and is  shown to the nearest 100 feet using 70 feet as the division point; e.g., a runway of 8,070' is labeled 81. The following run - way compositions (materials) constitute a hard-surfaced runway: asphalt, bitumen, chip seal, concrete, and tar macadam.  Runways that are not hard-surfaced have a small letter "s" following the runway length, indicating a soft surface. FAA Chart Users’ Guide - IFR Enroute Terms VOR Minimum Operational Network (MON) Airports Designator MON Airports with the Airport designator at the top of the Airport Data Block. The MON designation is to alert pilots  to those airports that have retained ILS and VOR instrument approach procedures for safe recovery in the event of a GPS  outage. Refer to the Aeronautical Information Manual (AIM) for expanded MON Airport guidance. A  symbol between the airport elevation and runway length means that runway lights are in operation sunset to sunrise.  A   symbol indicates there is Pilot Controlled Lighting. A  symbol means the lighting is part-time or on request, the  pilot should consult the Chart Supplement for light operating procedures.  The Aeronautical Information Manual (AIM) thor- oughly explains the types and uses of airport lighting aids. 60 Low Altitude AIRPORT DATA DEPICTION 1. Airport elevation given in feet above or below mean sea level 2. Pvt - Private use, not available to general public 3. A solid line box enclosed the airport name indicates FAR 93  Special Requirements - see Directory/Supplement 4. “NO SVFR” above the airport name indicates FAR 91 fixed- wing special VFR flight is prohibited. 5.   or   following the airport identifier indicates Class C or  Class D Airspace High Altitude - U.S. 6.  Associated city names for public airports are shown above or  preceding the airport name. If airport name and city name are  the same, only the airport name is shown. The airport identifier in  parentheses follows the airport name. City names for military and  private airports are not shown. 7. Airport Ident ICAO Location Indicator shown outside contigu- ous U.S. 8. AFIS  Alaska only High  Altitude - Alaska LIGHTING CAPABILITY  Lighting Available Pilot Controlled Lighting Part-time or on request  No lighting available At private facilities- indicates no lighting information is available