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Driver170

VNAV won't climb to the next alt constraint. during the MAP procedure

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I am thinking that the aircraft in VNAV mode still follows the altitude restriction in the FMS.  you probably need to use FLCH to climb higher than a restriction in the FMS.

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I'm not expert and hoping for an answer its a strange one. it works fine for me when flying a SID once you pass the waypoint with a AT rest you hit ALT INV and it climbs in VNAV SPD.

 

Where is matt (spin737) when i need him lol

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Need a lot more information to figure this one out.  What was the MCP altitude set to?  What were the indications on the FMA?

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I haven't flown a VNAV ALT equipped plane in a while. Can't you hit ALT INT to continue the climb?

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This is going to sound stupid ... but, have you tried to reset VNAV (turn it off and on again) to get out of VNAV ALT?

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What do you mean by that? What does the FMA annunciate after re-engaging?

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I will have to redo the saved flight and get back to you! But i'm sure VNAV ALT was displayed

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Iirc, VNAV ALT means that there's a conflict between the profile and the MCP altitude. However, I don't see it, and outside of changing pitch mode, altitude intervention is the way to get out of it. 

 

If you're sure you're clicking the spot (it's kind of hidden behind the rotary knob from the left seat), I'm out of options. :(

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I never got further than a Citation before I went to pursue other employment, so I would give it some more time and hope other people will have a solution. :)

 

Out of curiosity, which approach are you doing, where and how are you going missed, and which nav cycle do you use?

 

E: And if you use a standard livery without changing options, which one is it?

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EGSS runway 04 BKY MAP and the TRANS is lorel or something in the FMS. I use the 737 800 W jet2

I'm using the recent one for sept

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VNAV INV and it started to climb? Strange as mine don't :(

I've been selecting the TRANS after the MAP does this matter?

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I've been selecting the TRANS after the MAP does this matter?

 

No shouldn't matter. I pressed the ALT INTV and the plane climbed. I will try the flight again when I get home in a few hours, this time I might do a video

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VNAV INV and it started to climb? Strange as mine don't :(

I've been selecting the TRANS after the MAP does this matter?

TRANS after the MAP? What do you mean?

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Yeh a video will be great, i'm going to start a fresh one on the runway and quickly programm it.

 

Spin737, selecting a transition from the end of the map procedure

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I'll see if I can record something later if Antoni doesn't beat me to it. Didn't have the time yesterday. Never recorded FSX, so no promises, though.

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Here's what I did, and I think it's the same as what you're doing:

  • Fly ILS 04 down to minimums.
  • Press TO/GA, clean the aircraft up and climb out.
  • After stable at 3000' enter the STAR starting from LOREL
  • Set 6000' on the MCP
  • Click Altitude Intervene

Now it won't accept altitude intervene. 

 

However, if I do NOT enter the star, it will accept the altitude intervene and climb to 6000 under VNAV PTH, same as in Antoni's video. He doesn't do what you do, though.

 

Why this happens and if this is correct behavior, I do not know. I only know that it will not get out of VNAV ALT using altitude intervene after the STAR has been entered.

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