20TAKEOFF TOURNearest Airspace PageThe last page in the NRST group, the NearestAirspace Page, provides information for up to ninecontrolled or special-use airspaces near or in yourflight path. Airspace information appears on this pagebased upon the same criteria used for airspace alertmessages. Nearby airspace information and airspacealert messages are provided according to the followingconditions:• If your projected course takes you insidean airspace within the next ten minutes,the message “Airspace ahead -- less than 10minutes” appears.• If you are within two nautical miles of anairspace and your current course is suchthat it will take you inside that airspace, themessage “Airspace near and ahead” appears.• If you are within two nautical miles of anairspace and your current course is suchthat it will not take you inside that airspace,the message “Near airspace less than 2nm”appears.• If you have entered an airspace, the message“Inside Airspace” appears.By default, airspace alert messages are turned off.When turned on, the message (MSG) annunciatorlocated directly above the MSG key flashes to alertyou to the airspace message.To view additional information about theairspace, select the nearest airspace page.Detailed information is available by high-lighting the airspace name and pressing ENT.To view an airspace alert message:1. Press the MSG key. The message page appearswith the alert message.When an airspace alert occurs, the message(MSG) annunciator flashes at the bottom of thescreen. Press MSG to view the alert message.2. Press MSG again to return to the previousdisplay.Note that the airspace alerts are based upon three-dimensional data (latitude, longitude and altitude)to avoid nuisance alerts. The alert boundaries forcontrolled airspace are also sectorized to providecomplete information on any nearby airspace. Addi-tional information about a nearby airspace — such ascontrolling agency, frequency and floor/ceiling limits— is available from the nearest airspace page.Nearest Airspace
