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- Mar 15, 2016
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Ari
I’m wondering how the rest of you use these features, especially together. I have a specific use case that came up today and I’d like to find a way to automate it (my computer programming background specifies to automate every task you have to do twice).
Say you’re direct to an airport and set the VNAV so you’ll be at pattern altitude 3 miles before the airport. The GTN creates a temporary waypoint at destination minus 3. So far, so good. Now, Tower says to make straight in for a runway about 30 degrees off your track and report a 5-mile final. The visual approach feature of the GTN sets up a 3-mile final. Also, if you’re on autopilot, activating the visual approach or a leg on it will first throw the CDI off to the side and turn the plane to intercept it. The work-around I’m using is to turn on heading mode on the autopilot to ballpark a 5-mile final.
The better way to do this would appear to be to create an along-track fix on the final approach course from the GTN visual approach, 5 miles out, and then go direct to that fix to sequence the approach. But that isn’t allowed. Selecting the V3NM fix doesn’t offer an Along Track button and selecting the runway fix offers Along Track but limits it to the range of -1 to -3.
Is there a way to create an along-track waypoint outside of the 3-mile fix from the visual approach, on the final approach course?
Say you’re direct to an airport and set the VNAV so you’ll be at pattern altitude 3 miles before the airport. The GTN creates a temporary waypoint at destination minus 3. So far, so good. Now, Tower says to make straight in for a runway about 30 degrees off your track and report a 5-mile final. The visual approach feature of the GTN sets up a 3-mile final. Also, if you’re on autopilot, activating the visual approach or a leg on it will first throw the CDI off to the side and turn the plane to intercept it. The work-around I’m using is to turn on heading mode on the autopilot to ballpark a 5-mile final.
The better way to do this would appear to be to create an along-track fix on the final approach course from the GTN visual approach, 5 miles out, and then go direct to that fix to sequence the approach. But that isn’t allowed. Selecting the V3NM fix doesn’t offer an Along Track button and selecting the runway fix offers Along Track but limits it to the range of -1 to -3.
Is there a way to create an along-track waypoint outside of the 3-mile fix from the visual approach, on the final approach course?