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300/100/400 above/below your assined altitude (Read 2377 times)

Dec 5^th, 2011 at 9:32pm

alrot Offline
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I forgot how is that we fix our barometric discrepancy with the ATC , in other words when I'm flight sometimes the ATC by IFR tells me that I'm flying 300/100/400 above or below assigned altitude

I used to know to fix this a long time ago but I forgot

I keep pressing "B" to reset the altimeter and doesn't work Undecided

Undecided

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Reply #1 - Dec 5^th, 2011 at 10:24pm

mfaulisi Offline
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Descend or climb by 300/100/400..... Grin

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I've never had them tell me that when I wasn't actually deviating or had the incorrect altimeter setting, what aircraft or is it for all of them?

"For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return." - Leonardo da Vinci

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Reply #2 - Dec 6^th, 2011 at 12:58am

Ang2dogs Offline
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Should be the "B" button like you said, check your settings/controls/ buttons/keys /instruments: and altimeter (reset) should have "B" assigned to it. I can't remember what I did one day, but somehow I messed up my control buttons on the key board and had to reasign them back to normal by using the defaults button.

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Reply #3 - Dec 6^th, 2011 at 7:33am

Daube Offline
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An2dogs is right.
Alrot, the fact is that depending where you are flying, the barometric pressure changes and makes your altimeter display a wrong value. The ATC sees your real altitude though, and asks you to reach it.

In order to get the correct altitude displayed on your altimeter, you can:
- set the barometric pressure (there's a rotating button on some altimeters) according to the local meteo stations
- press the 'B' key to do that automatically.
You will see that, just like the ATC said, you are indeed below or above your assigned altitude.

One thing to note is that the adjustments of the barometric pressure are not necessary anymore above 18.000 feet, because from this altitude everybody has to use the same global setting.

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Reply #4 - Dec 6^th, 2011 at 7:37am

alrot Offline
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Ang2dogs wrote on Dec 6^th, 2011 at 12:58am:

Should be the "B" button like you said, check your settings/controls/ buttons/keys /instruments: and altimeter (reset) should have "B" assigned to it. I can't remember what I did one day, but somehow I messed up my control buttons on the key board and had to reasign them back to normal by using the defaults button.

that's the first thing I did , It is doing it in the 757 jetliners (Well Is also the only one I'm flying these days )

I will try this one (I assign the "," key to standard pressure altimeter to see if that could be, I remember I knew how to fix this because I spend a while in a local air approach tower of the SVVA and they explain me that also happens In real life ..
the same was happening to me in FSX and FS9 and by doing something that now I don't remember it fix the altimeter Undecided

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Reply #5 - Dec 6^th, 2011 at 9:31am

mfaulisi Offline
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Have you tried using another aircraft to see if it still does it?

"For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return." - Leonardo da Vinci

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Reply #6 - Dec 6^th, 2011 at 12:56pm

alrot Offline
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Daube wrote on Dec 6^th, 2011 at 7:33am:

- press the 'B' key to do that automatically.
You will see that, just like the ATC said, you are indeed below or above your assigned altitude.

One thing to note is that the adjustments of the barometric pressure are not necessary anymore above 18.000 feet, because from this altitude everybody has to use the same global setting.

I didn't see you post Stephane yes I keep dong it (not at this moment II'm busy I got to program my flight planer )
I'll do it tonight

mfaulisi wrote on Dec 6^th, 2011 at 9:31am:

Have you tried using another aircraft to see if it still does it?

This is something that hapends as Daube said with the variation of the barometric pressure ,It happens to me most of the time in any airplane

the weird thing is that the key "b" should fix it and its not doing it Undecided

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Reply #7 - Dec 6^th, 2011 at 6:33pm

Daube Offline
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When pressing the B key, what you should see if the altimeter(s) jumping up or down to the correct altitude.

I just want to ensure we're talking about the same feature here, so here's a bit of context: let's say you are flying at 5.000 feet exactely as planned in your IFR flightplan... 5.000 is displayed on your altimeter, but the ATC tells you that you are 500 below suddently. At this precise moment, it means that the altimeter is wrong. It shows 5.000 but you're not at 5.000. If you press B, you should see the displayed altitude change immediately to 4.500 feet. If you are with the autopilot, the plane should begin to climb automatically.

If the displayed altitude doesn't change, and the ATC keeps telling you're not in the correct altitude, then the B key doesn't work in your FSX.

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Reply #8 - Dec 6^th, 2011 at 6:35pm

Daube Offline
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One more thing... if the pitot tubes are frozen, the altitude display should get wrong too, right ?

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Reply #9 - Dec 6^th, 2011 at 8:41pm

alrot Offline
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Quote:

I just want to ensure we're talking about the same feature here, so here's a bit of context: let's say you are flying at 5.000 feet exactely as planned in your IFR flightplan... 5.000 is displayed on your altimeter, but the ATC tells you that you are 500 below suddently. At this precise moment, it means that the altimeter is wrong. It shows 5.000 but you're not at 5.000. If you press B, you should see the displayed altitude change immediately to 4.500 feet. If you are with the autopilot, the plane should begin to climb automatically.

If the displayed altitude doesn't change, and the ATC keeps telling you're not in the correct altitude, then the B key doesn't work in your FSX.

that's exactly what is happening and its being happening since I bought the FSX

Daube wrote on Dec 6^th, 2011 at 6:35pm:

One more thing... if the pitot tubes are frozen, the altitude display should get wrong too, right ?

oh yeah ,maybe are frozen because this start exacly when I start to decent after being at fl30 (Pitot heat its shift+h ) ,I'll check it out then I'll come back

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Reply #10 - Dec 6^th, 2011 at 10:14pm

alrot Offline
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Nope ,none of both No "b" (again) neither Heating Pitot tubes which in the 757 jetliners it display a sign in the Eicas screen
I took it from SVVA to SVMC ,same thing 400 below my assigned altitude Undecided

Undecided

I wonder if this could be the FSX FSGenesis

also I forgot to retract the flaps after a perfect flight parking it, cutting all the avionics battery etc , Tongue

Tongue

don't you hate when this happens to you? Angry

Angry

Grin

Venezuela

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Reply #11 - Dec 6^th, 2011 at 10:40pm

Ang2dogs Offline
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Go to the folder were your FSX.cfg file is. Open the Controls folder, and open the Standard.XML file using note pad and see if this is there:

<Entry>
<Key>B</Key>
<Down>BAROMETRIC</Down>
</Entry>

If not add it, than go to your main FSX folder, and check the
Standard.XML file there and do the same if you have to.

Now if that don't work,
try this. Take a look at "Failures". This has happen to me on a few ocassions were something will fail, even thoe I didn't set any failures. It has happened to me often enough, that when something happens and everything else checks out, I now will check failures, because even thoe no failures are set, the clock is ticking down and some times resetting will solve the problem, just one of those hidden FSX gems I guess, anyway hope you geter fixed!

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Reply #12 - Dec 7^th, 2011 at 9:52am

alrot Offline
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Ang2dogs wrote on Dec 6^th, 2011 at 10:40pm:

Go to the folder were your FSX.cfg file is. Open the Controls folder, and open the Standard.XML file using note pad and see if this is there:

<Entry>
<Key>B</Key>
<Down>BAROMETRIC</Down>
</Entry>

If not add it, than go to your main FSX folder, and check the
Standard.XML file there and do the same if you have to.

Now if that don't work,
try this. Take a look at "Failures". This has happen to me on a few ocassions were something will fail, even thoe I didn't set any failures. It has happened to me often enough, that when something happens and everything else checks out, I now will check failures, because even thoe no failures are set, the clock is ticking down and some times resetting will solve the problem, just one of those hidden FSX gems I guess, anyway hope you geter fixed!

I'll check the second option because I know the "b" key is working it move couple numbers like 12, 14 feet (I just check the *.xml anyway to be sure..its fine) but th difference its alway between 400 and 500 feet

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Reply #13 - Dec 8^th, 2011 at 6:56am

Brett_Henderson Offline
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The pitot tube is for airspeed.. the ASI measures pressure at the pitot tube, compared to pressure at the static port.. the altimeter works off the static port.. and I don't think FSX models static port ice.

You're using real-weather, right ?

Does the 'B' key set the altimeter to, '29.92' when above 18,000msl ?

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Reply #14 - Dec 8^th, 2011 at 8:36am

alrot Offline
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Brett_Henderson wrote on Dec 8^th, 2011 at 6:56am:

The pitot tube is for airspeed.. the ASI measures pressure at the pitot tube, compared to pressure at the static port.. the altimeter works off the static port.. and I don't think FSX models static port ice.

You're using real-weather, right ?

Does the 'B' key set the altimeter to, '29.92' when above 18,000msl ?

Brett!! .....or chief!! where you been? Cheesy

Cheesy

18,000msl

Undecided

is this 18 thousand feet or FL18?

I haven't check this is all IFR flight so I have to make a flight and wait until atc start telling me the discrepancy ,what I remember I hit the key B when I was at 4000 I believe I have to make a longer flight to check that out Undecided

Undecided

« Last Edit: Dec 8^th, 2011 at 11:54am by pete »

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