dresoccer4 20 Posted June 8, 2022 Share Posted June 8, 2022 Seemingly random, I can't get the VNAV display to work. I do same FMS setup every time (I think). And sometimes VNAV works, sometimes it doesn't. I feel like I'm missing something here. Take a look: As you can see the VNAV info is completely blank. Please login to display this image. But if you look on the MFD Data page, you can see the TOD is indeed known and correctly calculated: Please login to display this image. Please login to display this image. And "DESC INFO" page also knows what the next altitude restriction is: Please login to display this image. Anyone notice anything off that could be causing this issue? Please login to display this image. 1 Link to comment Share on other sites More sharing options...
dresoccer4 20 Posted June 8, 2022 Author Share Posted June 8, 2022 UPDATE: but to my surprise, the coupled autopilot VNAV worked! descended like a champ. wild Link to comment Share on other sites More sharing options...
Joe Markowski 139 Posted June 9, 2022 Share Posted June 9, 2022 I posted this issue last year with no replies except me talking to myself. It's probably still around here somewhere, but iirc the VNAV doesn't display if there are no hard altitude restrictions, which it looks like yours doesn't have. Whether or not that's correct behavior I can't say. Here it is: sure felt like last year anyway. 2 Link to comment Share on other sites More sharing options...
dresoccer4 20 Posted June 11, 2022 Author Share Posted June 11, 2022 On 6/9/2022 at 12:01 AM, Joe Markowski said: I posted this issue last year with no replies except me talking to myself. It's probably still around here somewhere, but iirc the VNAV doesn't display if there are no hard altitude restrictions, which it looks like yours doesn't have. Whether or not that's correct behavior I can't say. Here it is: sure felt like last year anyway. hmm interesting theory. i swear i've gotten it to work when simply using a pre-planned RNAV or ILS approach which programs in altitude restrictions automatically. what do you mean exactly by "hard" altitudes? Link to comment Share on other sites More sharing options...
Joe Markowski 139 Posted June 11, 2022 Share Posted June 11, 2022 16 hours ago, dresoccer4 said: hmm interesting theory. i swear i've gotten it to work when simply using a pre-planned RNAV or ILS approach which programs in altitude restrictions automatically. what do you mean exactly by "hard" altitudes? Cross at 15000 for example. Maybe an at or below, but if everything on the arrival is at or above I've never seen the VNAV window populated. Link to comment Share on other sites More sharing options...
dresoccer4 20 Posted June 12, 2022 Author Share Posted June 12, 2022 23 hours ago, Joe Markowski said: Cross at 15000 for example. Maybe an at or below, but if everything on the arrival is at or above I've never seen the VNAV window populated. i'll try this out next time. I've never manually added in a restriction before but have gotten VNAV and TOD displays just fine. i swear it feely random Link to comment Share on other sites More sharing options...
dresoccer4 20 Posted July 24, 2022 Author Share Posted July 24, 2022 update: after last patch I'm able to get this working exactly as intended, at least on my first fligtht. TBD if works on all subsequent. but at least I know I've been doing it correctly as it seems it was a bug Link to comment Share on other sites More sharing options...
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