GPS NAVIGATION190-00726-00 Rev. A 5-93Garmin G900X Pilot’s GuideAIRWAYS/JETWAYSNOTE: Refer to the Navigation Map Page setup section for details on how to customize the display ofairways on the MFD.Airways (called Low Altitude Airways in the G900X and in this pilot’s guide) serve primarily smaller piston-engine, propeller-driven airplanes on shorter routes and at lower altitudes. Airways start at 1,200 feet aboveground level (AGL) and extend upward to an altitude of 18,000 feet mean sea level (MSL). Airways are 8nautical miles wide. Airways are called “Victor” airways, because they run primarily between VORs, and thephonetic alphabet’s term for “V” is Victor. Airways have names like V222 or V37.Jetways (called High Altitude Airways in the G900X and in this pilot’s guide) are actually called jet routes,and serve primarily airliners, jets, turboprops, and turbocharged piston aircraft operating over longer distancesabove altitudes of 18,000 feet. Jet routes start at 18,000 feet mean sea level (MSL) and extend upward to analtitude of 45,000 feet MSL (altitudes above 18,000 feet are called “flight levels” and are described as FL450for 45,000 feet MSL). Jet routes have names like J42 or J121.NOTE: Airways are not selectable for display on the PFD Inset Map. The window is too small to be useful forthis purpose.The AIRWAYS Softkey allows the display of airways to be turned on or off. The softkey takes on one offour conditions to allow high and low altitude airways to be displayed in any combination.BACKTERRAINTOPOMAPTRAFFIC AIRWAYSAIRWY ONAIRWY LOAIRWY HIALL AIRWAYS ARE SELECTEDONLY LOW ALTITUDE AIRWAYS ARE SELECTEDONLY HIGH ALTITUDE AIRWAYS ARE SELECTEDFigure 5-75 Airway SoftkeysIn addition, an Airways group is a part of the map setup which allows an alternate method of selectingairways for the display as well as adjustment of maximum ranges for which high altitude and low altitudeairways are shown. See the Map Setup section for more details.