Form where does the aircraft get winds data that is shown on the Navigational Display ?

 

Dave Hinson

 

 

Form where does the aircraft get winds data that is shown on the Navigational Display ?

 

They're inferred based on the data from the ADIRU.  Position 1 + Heading 1 versus Position 2 + Heading 2.  Drift in position based on the two headings can be used to derive wind speed and direction.

Interesting, and thanks, Scandinavian.

 

And let me ask another question.  Can you enter a waypoint in the FMC derived from a bearing and radius from a fix defined on the fix page ?

 

Dave

 

 

Can you enter a waypoint in the FMC derived from a bearing and radius from a fix defined on the fix page ?

 

I believe so, yes.

I assume that you don't have a reference in the tutorials or operating guides that will tell me how to do this ?  I took a cursory look but didn't find anything.

 

Dave

 

 

I assume that you don't have a reference in the tutorials or operating guides that will tell me how to do this ?

 

The NGX tutorial #2 went over this, and I'm assuming the 777 tutorial #2 will as well.

 

Until that comes out, though:

FCOMv2 Page 11.31.17 (near the top, it shows you an example using SEA)

The next page has some cool information as well to look at while you're in there.

Thanks very much.  I have not really perused the FCOM documents as I should have   :wub: .

 

Dave

Thanks very much.  I have not really perused the FCOM documents as I should have   .

 

haha - I totally forgot I was in the NGX forum and not the 777 forum.  My FCOM reference above was for the 777.  For the NGX, take a look at Tutorial #2.  There are a bunch of tricks in there.

 

If you want to find the NGX FCOM reference, run a search for "place-bearing."

They're called place-bearing/distance waypoints in the manual, but searching place-bearing should be enough to find it.

Yes, I found it in the NGX tutorial.

 

Thanks

Since you seem to be my fount of knowledge, let me ask you another :

 

On my 747 VNAV Climb page, I see the "ERROR" message "9210 LO".

 

What may that be ?

 

I admit again that I have nor read all the ACOMs .  Sorry.

What may that be ?

 

I've honestly forgotten most all of my 744 knowledge.  The manuals that come with the 744 aren't the dry Boeing manuals, so I'd take a look in there.  The FMC chapter should have something.  If not there, then SmartCockpits might have something.

 

EDIT:

Wait, are you talking about VERT PATH ERROR?

If so, it's telling you that you're 9210 feet below the calculated VNAV path.

 

On my 747 VNAV Climb page, I see the "ERROR" message "9210 LO".

 

 

 

Wait, are you talking about VERT PATH ERROR?
If so, it's telling you that you're 9210 feet below the calculated VNAV path.

 

That sounds like the most probable answer. I don't recall anything else that would issue an error like that. But I haven't taken the Queen for a spin in quite some time. I have, however, seen messages like that in other Boeings so it would make sense that it would mean the same thing.