On this same Menu page, you can enable VNAV.įigure 1. If instead you want to descend at, say 500 feet per minute, select that here and the TOD point will adjust accordingly. First, check the VNAV descent rate on the Flight Plan page (Menu -> VNAV) to determine the vertical rate that will reach the desired VNAV altitude. If not, but you have an autopilot with VS mode, you can use that. If VNAV is enabled in the 750, and you have a Garmin PFD and their recent digital autopilot, you can fly this VPTH (vertical path) with the autopilot in VNAV mode. CULUL has a crossing altitude of 2,100 feet. Note on the top right that the first leg is “Direct CULUL.” Climbing to 4,500 feet creates a Top-of-Decent (TOD), where the VNAV course to CULUL begins. This is a quick way to make a flight plan for practice approaches without having to specify your home airport or destination in the plan.įigure 1 shows the map page of the flight on the left, including the missed approach to YUBBA, while the right side has the flight plan with the VNAV altitudes listed for the step-downs. In this process, the ILS frequency is put into NAV standby. By activating it on the ground a flight leg is created from KGOO to CULUL, which is the initial approach fix and (after the procedure turn) the final approach fix. ![]() Choosing “Load Approach & Activate” creates a flight plan consisting solely of the approach. We enter the airport, the ILS 14, and the transition at CULUL. Here, we’ll walk through a typical scenario to illustrate the many ways in which that happens.įrom my home base of Nevada County Airport in Grass Valley, California (KGOO), let’s plan to fly the ILS 14 practice approach to nearby Yuba County Airport (KMYV), which is loaded into the 750 from the PROC page. In the age of glass panels, with modern GPS/VLOC receivers like the GTN 750, coupled with a primary flight display (PFD), most of the chores involved in shooting an ILS are automated. These, coupled with a CDI to show your course, required that you tune in the VOR or localizer (VLOC), and set the OBS course on the CDI to track that course. ![]() Many of us remember the days before GPS, when navigation was primarily with VORs.
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