VNAV lost during descent 1.0.4 ( To be confirmed )

[cmbaviator]

Hi guys

 

Well after passing T/D and starting the descent, I went on Youtube to watch a video, after several minutes I noticed that VNAV was disengaged and A/T was on ARM mode on the FMA. if i recall correclty, the only way to get back to VNAV was to engage N1 mode or V/S and then press VNAV again to work. A friend had the same issue.

As i wasn't there when the bug appeared, I need people to confirm if they had this odd behaviour.

[Litjan]

I would put money on VNAV overspeeding (getting within 10kts of the upper speed limit) due to a steep segment.

Jan

 

[FloB]

You left the cockpit during flight and without FO? Are you totally crazy?

Flo

 

Edited May 23, 2016 by FloB

[cmbaviator]

34 minutes ago, FloB said:

You left the cockpit during flight and without FO? Are you totally crazy?

Flo

 

do you think I'm gonna stay 1 hr on xplane during cruz+descent whereas i can do other stuff ^^

[cmbaviator]

40 minutes ago, Litjan said:

I would put money on VNAV overspeeding (getting within 10kts of the upper speed limit) due to a steep segment.

Jan

 

 

isn't the B737 CL smart enough to pitch up when he's dangerously approaching that upper limit ?

[Litjan]

It´s smart enough to first disengage VNAV

[kopek666]

6 hours ago, cmbaviator said:

Hi guys

 

Well after passing T/D and starting the descent, I went on Youtube to watch a video, after several minutes I noticed that VNAV was disengaged and A/T was on ARM mode on the FMA. if i recall correclty, the only way to get back to VNAV was to engage N1 mode or V/S and then press VNAV again to work. A friend had the same issue.

As i wasn't there when the bug appeared, I need people to confirm if they had this odd behaviour.

Yes, I have the same issue, on my descent (VNAV mode), I put my throttle full back to not overspeed and when I want to put more throttle (because my speed was 10 knots below speed reference, I can't do that.

bitmaps showing AT position works well but the quandrant don't move.

And I have this same issue on landing (landing with SPD mode and pull back throttle on touchdown) and when I want to taxi out, I can't do that, A/T on.

I disconnect A/T, nothing, I must engage A/T, SPD mode and disconnect A/T for taxi out

[Litjan]

1 hour ago, kopek666 said:

Yes, I have the same issue, on my descent (VNAV mode), I put my throttle full back to not overspeed and when I want to put more throttle (because my speed was 10 knots below speed reference, I can't do that.

bitmaps showing AT position works well but the quandrant don't move.

And I have this same issue on landing (landing with SPD mode and pull back throttle on touchdown) and when I want to taxi out, I can't do that, A/T on.

I disconnect A/T, nothing, I must engage A/T, SPD mode and disconnect A/T for taxi out

User error - you need to regain control of your thrust levers as mentioned and shown on the tutorial videos. Please watch them for how to do that.

Jan

 

[kopek666]

OK, I must be honest I don't see manuals or videos (I have a little experience, flight sim, not real, on 737 NG)

But if it is an human error, I will read and study video, sorry if I lost your time

[Litjan]

44 minutes ago, kopek666 said:

OK, I must be honest I don't see manuals or videos (I have a little experience, flight sim, not real, on 737 NG)

But if it is an human error, I will read and study video, sorry if I lost your time

Oh, don´t be sorry - I am here anyway . But yeah, go ahead and watch a few of those and it should answer quite a few questions you have! Easier than me explaining everything here in the forums .

Jan