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my ap won't fly this approach |
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nhflydoc 
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Joined: 06 Jul 2019 Location: Gilford, NH Status: Offline Points: 7 |
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 Topic: my ap won't fly this approachPosted: 24 Mar 2022 at 4:50pm |
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RNAV 32 KIZG LPV
I have a trutrack AP and Avidyne 440. I have flown other LPV approaches with no issue but on this one my AP flags the GS and levels off at 2200 feet. I get a GS indication on my PFD but the AP will not capture it and I have to disconnect and hand fly it. Any ideas? It seems the GS loads late on this approach. Alan |
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rolfe_tessem
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Joined: 06 Jan 2012 Location: Massachusetts Status: Offline Points: 185 |
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Posted: 26 Mar 2022 at 9:24am |
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Where on the approach are you trying to activate approach mode (or whatever they call it on your AP)? I have a local approach where I have to descend to the first stepdown on my own -- the approach doesn't activate until the second one. If I activate approach mode on my 55X too early, the AP will try to chase the (non existent) GS above me. Rolfe |
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nhflydoc
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Joined: 06 Jul 2019 Location: Gilford, NH Status: Offline Points: 7 |
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Posted: 26 Mar 2022 at 12:40pm |
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What I found is when the LPV GS comes alive It shows me 1 dot high and that is not enough time to arm the AP so it shows FLG. If you look at the RNAV 32 approach you see you are supposed to be at 3100.well at the altitude when the GS shows its too late to arm the AP.
If I fly VTF I get a GS at the IAF Alan
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nhflydoc
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Posted: 26 Mar 2022 at 8:56pm |
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see video
https://share.icloud.com/photos/0bdmhhqSYpsP9R7ZbLbXkzSuQ |
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