12-49500 FT5 NM2500 FT2500 FTAs you approach the course, CTS will slowly change and, once on course,will be identical to the desired track.12.4 VERTICAL NAVIGATION (Aviation Feature)The vertical navigation (VNAV) function, introduced in Section 9.5, will helpyou plan climbs and descents and will recommend the altitude at which youshould be in order to accomplish the desired maneuver.Suppose you are travelling from Denver, Colorado to the Beech factory inWichita, Kansas. You are flying VFR at 9,500 feet MSL. You wish to be at2500 feet (500 feet above Beech's traffic pattern altitude) 5 nautical milesfrom the airport. Additionally, you wish to descend at 1000 feet per minute.Enter the above data on the VNAV Planning page and turn the VNAV functionon.The GPS 100 will inform you when it is time to begin your descent into Beechwith the message “START ALTITUDE CHNG”.While descending, monitor the page for the recommended altitude during themaneuver (displayed in the FROM altitude field).
