ILS at Batumi

[funkster]

Hi Ive been away for awhile and just running through some basic training again - ILS zero vis landing being one of them.

 

Anyway I have set up ILS as normal Freq 110.30 (Batumi R130), turn on ILS (beeps), Set Tacan 16x (TR) on, Turned both Tacan /ILS on in the Navigation panel , unstowed bars. Set HSI with 125 etc

 

On approach I am still not getting the glide scope or localizer showing??? Has something changed?

[Username455]

someone will ask for a track to see exactly what you are/arent doing and then go from there :)

 

also, the heading of the runway is 119.5. the charts that say 125 are wrong

[funkster]

Hopefully ive just uploaded the track - As you can see I end up landing using the HSI alone and judging the glide slope bt the distance to airfield.

 

Still not getting steering bars - Must be something in the recent changes as this always worked for me up to 1.1.0.9 (as I said ive just come back from a break).

 

125 works fine for me?

Low VIS ILS Test.trk

[Username455]

you actually stowed your bars, meaning you wont see them. Keep them to the left where it says "able".

 

also, if you watch your track again you will see that when you are lined up with the runway you are actually heading 120 (119.5 to be exact). If you tried to line up with 125 you would be way off course. Try doing an ILS landing without using the divert page (which puts the waypoint marker over the runway) and you will see how important those 5 degrees are :)

[effte]

First off, you are probably better off leaving the command bars stowed. These are your ILS indicators:

 

 

Second, the correct runway heading is 126 degrees. It would, however, appear that they have managed to bug the magnetic variation even worse with this release so the in-game rwy hdg is 119.5 at the moment. Arrrrgh....!

[ralfidude]

There are a few charts of runways and their respecting frequencies, runway numbers, ILS and Tacan channels, I suggest you print them, and look at them to double check that the runways are right.

 

The divert page will show you the runways, but as its been said, some runways have been ****ed up and they do not correspond to the right runway headings. Some are off by like 5 degrees.

 

 

Also, use the HSI, so the bottom device to get yourslef lined up, but then dont rely on it anymore once you get close. The yellow bar lines, are perfect for right dead on aligment, even if you put in the wrong heading course on the HSI because of the messed up runway headings.

[effte]

Neither indication cares about the set course. Centerline will mean centered indicators, regardless of course. The HSI course setting only makes life easier for the pilot while trying to align.

[Username455]

when you say correct heading, do you mean real world? In DCS world I dont think I found a single runway that matched the heading in the available charts

[effte]

Correct = corresponding to real life, yes.

[Username455]

gotcha thanks, would be cool if they fixed that then

[ralfidude]

Iv checked the list of airports and their headings with the headings listed on a few charts iv found, there are a hand full of airports that are broken, but the rest are OK. Id say less than half are broken.

[funkster]

Thanks all :)

 

I'm sure the able/stow was the other way around at some point . More than likely just my memory doh ! Thanks for spotting it :)

 

With regards to the runway headings- yes I've been aware of this issue previously and have various charts and iPhone app with the variance indicated. As someone has suggested above I only use them for a rough alignment but will try the further altered 19.5 :)

 

Also I do only prefer to set course heading and understand that this is optional / ease of use.

 

Anyway thank you all for your excellent help. I'm glad to see the forum is still just as friendly and full of positive helpful people. Thanks again now I'm off for some more refresher training :)

[Username455]

you're welcome funkster :) happy landings!

 

and sorry to get a little off topic with the runway headings, its just something that has bothered me for a long time.

 

Ralfidude, which charts are you using? I always feel like Im doing something wrong because no one ever says anything lol. Based on the chart I looked at (and the F10 map in game) every runway heading is off compared to what I get when lined up on the runway. Some are closer than others, but none are what the charts say. Are they supposed to be 6 degrees off? it seems like approach charts would try and give you exact data wouldnt they?

[159th_Viper]

Some are closer than others, but none are what the charts say. Are they supposed to be 6 degrees off? it seems like approach charts would try and give you exact data wouldnt they?

 

Runways in-SIM are all aligned to the magnetic heading as opposed to the true heading given in the charts.

[cichlidfan]

Except for the ones that are affected buy the Mag Var bug!

[159th_Viper]

Except for the ones that are affected buy the Mag Var bug!

 

It is the HSI that is bugged.

 

Take Batumi as an example: RL heading as per charts is 130.89 degrees, giving a MagVar heading of 125.89 if one takes into account the 5 degree variation at time of the DCS map draft (subsequently increased to 6 degrees, but irrelevant for this discussion - work on 5 degrees).

 

Now that we know the Batumi Mag heading is 125.89 degrees, go in-SIM and compare Batumi RW heading with the ruler tool:

 

126 degrees.

 

That is Batumi - have not looked at other bases which could have their own quirks which I obviously cannot discount. It is however not dependant on the Mag Var bug as stated.

[cichlidfan]

The HSI is not the only instrument reading 120 degrees at Batumi. Heading tape and Standby Compass also read the same.

[159th_Viper]

I rely on the CDU for the Mag heading. I am assuming that the value as per the CDU is relied on/reflects what appears on the HSI/Heading tape/Compass.

 

Then again, I am aware of the fact that assuming is dangerous :D

[cichlidfan]

I rely on the CDU for the Mag heading. I am assuming that the value as per the CDU is relied on/reflects what appears on the HSI/Heading tape/Compass.

 

Then again, I am aware of the fact that assuming is dangerous :D

 

In which case, it would be the CDU that is bugged.;)

[159th_Viper]

CDU/HSI,Compass......whatever - I'm not into word-games.

 

As long as it gets addressed, which it is, as per the other thread :)

[ralfidude]

The divert page is what gives you the wrong reading gents.

 

 

Once they change the divert page to tell you correct runway heading, you will be all good to go with the HSI.

 

The ones I know of that are incorrect are: Batumi, Kobuleti, Mineraly VOdy, Nalchik, Tbilsi and Vaziani. All of these are off by 1-10 degrees.

 

I got the real charts from:

http://www.virtual-jabog32.de/index.php?section=downloads&subcat=37

DCS A-10C Ground Charts 3.3.5

[159th_Viper]

Once they change the divert page to tell you correct runway heading, you will be all good to go with the HSI.

 

I got the real charts from:

http://www.virtual-jabog32.de/index.php?section=downloads&subcat=37

DCS A-10C Ground Charts 3.3.5

 

With respect, it appears as if the jabog charts are incorrect insofar as it pertains to this specific example, ie Batumi.

 

Batumi is, as said, on a Mag Heading of 126 and 306 as opposed to the 119 and 299 in the jabog charts:

 

 

Batumi chart - [ATTACH]52692[/ATTACH]

[cichlidfan]

Fortunately, the Jabog charts match what the aircraft is telling you about the DCS world.

[ralfidude]

I also used another chart and figured out the differences.

 

 

Something IS wrong here.

[BlueRidgeDx]

I just finished a 14 hour marathon of math homework, and my brain is the consistency of overcooked oatmeal. Still, it occurs to me that the ruler in the ME actually measures True Heading.

 

If so - and if the ruler reads 126 - then the problem is not Mag Var at all. It's that the physical airport models are incorrectly rotated/placed. In other words, the physical model might actually be aligned to 126 True, and thus 121 Magnetic.

 

This kind of error would look identical to a Mag Var error from the cockpit.

 

It's just a theory. Somebody should really test it. What's that? I AM a tester? Hmmm, maybe I'll have time after finals.