GNS 430 Pilot’s Guide and Reference8-10SECTION 8NRST PAGES5) Press the ENT Key to place the selectedfrequency in the standby field of the COM orVLOC Window (figure 8-25).Figure 8-25 Frequency Moved to Standby Field6) Press the COM Flip-flop or VLOC Flip-flopKey, as appropriate, to activate the selectedfrequency.7) Press the small right knob to remove theflashing cursor.8.9 NEAREST AIRSPACE PAGEThe last page in the NRST group, the Nearest AirspacePage alerts the pilot to as many as nine controlled orspecial use airspaces near or in the flight path. Alerts areprovided according to the following conditions:• If the aircraft’s projected course will take it insidean airspace within the next ten minutes, the alertmessage ‘Airspace ahead -- less than 10 minutes’appears (Figure 8-26). The Nearest Airspace Pageshows the airspace as ‘Ahead’.Figure 8-26 Airspace Messages• If the aircraft is within two nautical miles ofan airspace and the current course will take itinside the airspace, the message ‘Airspace nearand ahead’ appears (Figure 8-26). The NearestAirspace Page shows ‘Within 2nm of airspace’.• If aircraft is within two nautical miles of anairspace and the current course will not take itinside the airspace, the message ‘Near airspace lessthan 2nm’ appears. The Nearest Airspace Pageshows the airspace as ‘Ahead < 2nm’.