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Autobrakes not working

Featured Replies

Hi I know this has probably been asked before, but please don't re-direct me I just want some help, also please don't say "read the manual!" thanks! I arm the spoilers and arm the auto breaks to 3 on landing but they never deploy, I have to manually break which over heats the tires. I have FSUIPC and am worried that might be the issue, has anyone encountered this issue and can tell me how to fix it?

 

-Thanks in advance Ollie Seaward.

i5 8600K  @4.5Ghz 16GB RAM GTX1060 

READ THE MANUAL!! LOL sorry, couldn't resist.

What sim are you using? What setup do you have? These details may have some bearing on the problem...

Rudder pedals with toe brakes? Or do you just press the trigger on a flightstick to brake? In FSX, there's your problem right there. The trigger slams the brakes on and locks the wheels. You may want to look at button or key assignments to assign (well, yeah!) something to the anti-skid function within the sim. That way you get braking action (yes it's full-on unfortunately) but it doesn't lock the wheels up. That way you have a binary, non-proportional braking solution to what should be an analogue function (real hydraulics & proportional control on the real thing).

There may be something in the manual (there's that word again :blush:) regarding FSUIPC and PMDG products, but that may be specific to type. I don't know, I don't own a PMDG product... yet, just spend too much time on AVSIM, occasionally trying to help. I don't even know if there's an option within the PMDG aircraft to setup brakes using a key or joystick trigger without doing so in the actual sim.

Be prepared for more RTFM comments just because.... :tongue:

Mark Robinson

Part-time Ferroequinologist

Author of FLIGHT: A near-future short story (ebook available on amazon)

I made the baby cry - A2A Simulations L-049 Constellation

Sky Simulations MD-11 V2.2 Pilot. The best "lite" MD-11 money can buy (well, it's not freeware!)

Hello,

What does make you think the autobrake doesn't work?

16 minutes ago, ols500 said:

but they never deploy

Guess you are talking about the speedbrakes here? They will deploy when you select the idle reverse.

 

Basically, you will have to assume the autobrake works as long as you don't see the amber warning "AUTOBRAKE" on the upper EICAS.

If you don't have the warning they it should be working. Do you have a friction script with fsuipc?

Romain Roux

204800.pngACH1179.jpg

 

Avec l'avion, nous avons inventé la ligne droite.

St Exupéry, Terre des hommes.

  • Author

Hi Romain,

Sorry I wasn't clear :) The spoilers work fine, it is just on touch down the auto brake "disengage" warning shows up even though I haven't applied manual braking.

3 minutes ago, Budbud said:

Do you have a friction script with fsuipc?

Sorry I don't know what this is. I only know my auto brakes work on every other aircraft, accept my PMDG 777.

i5 8600K  @4.5Ghz 16GB RAM GTX1060 

3 minutes ago, ols500 said:

Sorry I don't know what this is.

Forget about it, it is irrelevant to your issue.

Since you have fsuipc, and the autobrake works fine in the 777, I would assume that you have different profiles for the 777 and the 747 and that you have the manual brakes axis set in fsuipc on rudder pedals?

If it is the case, the calibration of your hardware in fsuipc could be the cause with an unsufficient deadzone. Even with the toe brakes physically released, the sim may detect a constant slight application because of the calibration.

Romain Roux

204800.pngACH1179.jpg

 

Avec l'avion, nous avons inventé la ligne droite.

St Exupéry, Terre des hommes.

  • Author
2 minutes ago, Budbud said:

Since you have fsuipc, and the autobrake works fine in the 777, I would assume that you have different profiles for the 777 and the 747 and that you have the manual brakes axis set in fsuipc on rudder pedals?

I only have the PMDG 777, by other aircraft I mean Aerosoft A320 etc.. And in FSUIPC in "buttons & switches" I have the a key on my joystick set to "brakes" do I need to add an "auto brake" key?

i5 8600K  @4.5Ghz 16GB RAM GTX1060 

Sorry, for some reasons, I thought it was the 747 forum...

3 minutes ago, ols500 said:

do I need to add an "auto brake" key

No.

Here is what you can try:

Delete the button assignement to the brakes in fsuipc, and try to perform a landing without any button assigned to the brakes.

If the autobrake doesn't disengage, that means the button previous assigned to the brakes likely send some spikes to the sim even when you don't touch it.

Some joystick are more or less sensitive or more or less shielded and may have some "static noise" or interferences which makes the sim detects signal from the buttons or the axis.

If it is the case, you may consider assigning the another button to the brakes.

Romain Roux

204800.pngACH1179.jpg

 

Avec l'avion, nous avons inventé la ligne droite.

St Exupéry, Terre des hommes.

  • Author

Ok, good idea I will try this tomorrow and get back to you :)

 

-Ollie Seaward

i5 8600K  @4.5Ghz 16GB RAM GTX1060 

Ollie,

if you have other game controllers (like an x box controller) plugged in then p3d and fsx use to assign axes to every axis on your controller. Even to thumb sticks and so on. Make sure that no axis is assigned to your brakes in your p3d/fsx assignments. As soon as you touch down and there is any movement of the toe brakes the autobrakes will be ditched. 

,

  • Author

Thanks guys, I realized on landing I was accidentally hitting the brake button causing auto brakes to turn off, I changed the button and my issue is solved.Thanks for the solution :)

i5 8600K  @4.5Ghz 16GB RAM GTX1060 

Glad you got it sorted. :cool:

Mark Robinson

Part-time Ferroequinologist

Author of FLIGHT: A near-future short story (ebook available on amazon)

I made the baby cry - A2A Simulations L-049 Constellation

Sky Simulations MD-11 V2.2 Pilot. The best "lite" MD-11 money can buy (well, it's not freeware!)

  • 3 weeks later...

Well since the last update, I have had the same issue in that autobrake disengages immediately.  Everything was set up as before.  You can even hear it click off upon landing.

 

If I am missing something that I should be doing let me know.  It is getting kinda hard to land without having overheated brakes

Ted W.

 

19 hours ago, Ted Wendin said:

Well since the last update, I have had the same issue in that autobrake disengages immediately.  Everything was set up as before.  You can even hear it click off upon landing.

 

If I am missing something that I should be doing let me know.  It is getting kinda hard to land without having overheated brakes

Read this thread?  How are we supposed to know what "everything" is as in everything set up as before?  If anything sends a brake signal, the autobrake is cancelled.

Dan Downs KCRP

  • 2 weeks later...
On 1/20/2018 at 4:02 PM, downscc said:

Read this thread?  How are we supposed to know what "everything" is as in everything set up as before?  If anything sends a brake signal, the autobrake is cancelled.

Yes, I did read this and I do not touch the brake button on my joystick or computer.  and by everything means I did not change any configurations between the two updates, so my buttons would have been the same.  Sorry if that did not make sense.I have even disabled the joystick upon an ILS landing and took off the period break on the keyboard and it still disengaged upon landing.

 

This does NOT happen with my PDMG 737-800NG, that one works perfectly fine.  

 

I am only wondering now If I am missing something that I overlooked.

Ted W.

 

Archived

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