HDG doesn't work?

[GaryMcCl 16]

I'm sorry for being stupid, but since I took-off here, the aircraft hasn't followed the flight-plan. If you see the pic, you'll must be able to see that the aircraft keeps simply not following the plan.

Should the 'dot' be there to it can catch the path? So far that hasn't worked.

[Polo 62]

1 hour ago, GaryMcCl said:

Should the 'dot' be there to it can catch the path?

 

Not so much info, but more important than a dot is what's FMA shows?

 

 

[GaryMcCl 16]

1 hour ago, Polo said:

Not so much info, but more important than a dot is what's FMA shows?

 

Other than making the line in the ND (by making the reading "---*") solid, it still doesn't work (as you can can see on the pic). I cross the solid line, with the ND set to "---*", but that doesn't help. It's like it's missed it.

[Polo 62]

You can read your FMA in PFD . There you can know you truly mode active or armed. Autopilot windows not always shows all picture.

[samwise7 37]

As Polo said, there isn't enough information in your picture to help answer your question, and from your replies I can only assume you aren't sure what is meant by FMA.  

The FMA (flight mode annunciators} is the top horizontal strip along the top of the primary flight display (the display to the left of the navigation display in your picture}.  There is where you can see how the autopilot is commanding your aircraft. 

 

Also you should show the MCDU flight plan to make sure that is correctly programed. 

   

[GaryMcCl 16]

1. I am about to taxi - no problems:

 

2. Ready to TO1 

 

3. before TO, more info 

 

4. taking off - AP not on yet 

 

5. ap ON, but not following HDG 

 

6. ignores that it has reached heading set in HDG.  When reaching HDG path, it switches to ---*, but it doesn't change it's path, it just keeps going where the HDG was previously set to. 

[GaryMcCl 16]

Just now, GaryMcCl said:

1. I am about to taxi - no problems:

2. Ready to TO1

 

 

 

 

 

5. ap ON, but not following HDG 

 

6. ignores that it has reached heading set in HDG.  When reaching HDG path, it switches to ---*, but it doesn't change it's path, it just keeps going where the HDG was previously set to. 

3. before TO, more info

 

4. taking off - AP not on yet

Just now, GaryMcCl said:

5. ap ON, but not following HDG 

6. ignores that it has reached heading set in HDG.  When reaching HDG path, it switches to ---*, but it doesn't change it's path, it just keeps going where the HDG was previously set to. 

Why isn't following?

[GaryMcCl 16]

Can anyone help?  -  I just can't get the HDG to the guiding the plane when I always have in the past.

[masterhawk 688]

Ah, that nasty bug. Hard to recreate for us. I had it myself several times.

 

When airborne perform an DIR TO to the next wpt, and HDG will work again.

 

The reason for that bug is a special combination of order during flight setup. 
If you have a 100% recreatable order of steps, please post. Maybe we will finally be able to track it down.

[GaryMcCl 16]

3 hours ago, masterhawk said:

The reason for that bug is a special combination of order during flight setup. 
If you have a 100% recreatable order of steps, please post. Maybe we will finally be able to track it down.

 

It really means a lot to me that you got back with a likely solution. As soon as I can, I'll let you know how that goes.

 

Gaz

[GaryMcCl 16]

8 hours ago, masterhawk said:

Ah, that nasty bug. Hard to recreate for us. I had it myself several times.

 

When airborne perform an DIR TO to the next wpt, and HDG will work again

 

I can't believe it - but after all the crap I have gone through - YOU have solved my problem.  After all my months, I flew no problem from Edinburgh to Heathrow.

 

THANKS!

Gaz

[SeaJunk 8]

A few of us have hit this before

You can fix it on the ground by reloading/toggling the aircraft state or in the air with the DIR to method. Sorry I didnt see your post earlier.

I encountered this again today in the A321 (1.4.2.0) and fixed it in the air.