Garmin aera 660 aera 660 Pilot s Guide - Page 64

Overview Navigation Additional Features Hazard Avoidance Flight Planning Navigation AIRWAYS Low Altitude Airways (or Victor Airways) primarily serve smaller piston-engine, propeller-driven airplanes on shorter routes and at lower altitudes. Airways are eight nautical miles wide and start 1,200 feet above ground level (AGL) and extend up to but not including 18,000 feet mean sea level (MSL). Low Altitude Airways are designated with a "V" before the airway number (hence the name "Victor Airways") since they run primarily between VORs. High Altitude Airways (or Jet Routes) primarily serve airliners, jets, turboprops, and turbocharged piston aircraft operating above 18,000 feet MSL. Jet Routes start at 18,000 feet MSL and extend upward to 45,000 feet MSL (altitudes above 18,000 feet are called "flight levels" and are described as FL450 for 45,000 feet MSL). Jet Routes are designated with a "J" before the route number. Low Altitude Airways are drawn in gray. High Altitude Airways are drawn in green. When both types of airways are displayed, high altitude airways are drawn on top of Low Altitude Airways. When airways are selected for display on the map, the airway waypoints (VORs, NDBs and Intersections) are also displayed. Displaying/removing airways: 1) From the Main Menu, touch Map > Menu > Set Up Map. 2) If necessary, touch the Dedicated Page Icon, and touch the Navaid Group. 3) Touch the 'Airways' Data Option Button, and touch the desired option from the list ('Off', 'Low', 'High', or 'Both'). Appendices Index 48 Garmin aera 660 Pilot's Guide 190-02017-20 Rev. A