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Driver170

Brake pressure checks

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I can't see this item getting checked during preflight? does anyone know if its part of the flows?

 

Also i read somewhere this pressure isn't simulated correctly before engine start is this true? 

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The accumulator pressure gauge is above and off to the right of the landing gear lever, and takes a moment to check. It is a part of the before start procedure in the pmdg fcom. When do you check? Depends on the airline.

 

It works perfectly. The needle should be in the green band (above 2800 psi) AFTER pressurising hydraulics. With hydraulics de-pressurised, the needle usually settles to somewhere on the Orange band, just as it does on the real thing.

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I think you mean't to see about 3000 psi in the real world? But i don't know i seen it somewhere

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Yeah 3000psi is pretty standard for most airliners, give or take a few hundred psi. 

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I mean't the system A and B HYD should be at a min 3000 but on the PMDG its 2800 psi

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I mean't the system A and B HYD should be at a min 3000 but on the PMDG its 2800 psi

 

As far as I understand the documents 3.000 psi are normal brake pressure, not the minimum. The AOM I got access too states that 2.800 psi are the minimum pressure. I can state if this airline specific.

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Yeh nomial pressure is 3000 psi but i've never seen it on PMDG ? in real life on youtube clips its at 3000

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Not sure what you are doing. Well I just started the sim - not loading any panel state - with both engines running, no parking brake set all HYD pumps on, I do see this:

 

2015671256m2szqfvwkh.jpg

 

Looks normal to me?

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Yeh i see it now. But on skysurfers youtube video at Madeira at 16:16 he mentions it, check it out.

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Yeh i see it now. But on skysurfers youtube video at Madeira at 16:16 he mentions it, check it out.

 

Not sure what you mean, he's wondering why the levels are low and he also says that on his airline 2.800 psi are the minimum pressure. That's pretty much in accordance with my earlier post.

 

If your HYD pressure seems to be rather low, have you ever tried to use PMDG's maintenance function to refill the system?

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Ok that clears that up. I'll check it on my next engine test start christian and let you know

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