LERJ runway error

[lgprocopio]

Hello,

there is a problem with the runway id in LEJR (Jerez) airport.

This is the correct runway data (https://flightplandatabase.com/airport/LEJR):

ID Width Length Bearing (true/mag) Surface Threshold Overrun Markings Lighting
02 148 ft / 45 m 7,567 ft / 2,306 m 21.36° / 22.31° ASPHALT 0 ft / 0 m 197 ft / 60 m PREC-APP CENTERLINE EDGE THRESHOLD SALS REIL-OMNI
20 148 ft / 45 m 7,567 ft / 2,306 m 201.36° / 202.32° ASPHALT 0 ft / 0 m 197 ft / 60 m PREC-APP CENTERLINE EDGE THRESHOLD CALVERT-ILS REIL-OMNI

But in FlightGear scenery, downloaded automatically from TerraSync, there are two runways defined, 02/20 and 03/21, and both are overlapped.

I'm new to FlightGear and I have no idea of how to correct this, so I post this message just in case anybody can do it.

[danielHL]

Hi,

welcome to flightgear! I don't see this error:

http://imgur.com/a/xgGRafq

Can you post a screenshot of your problem? Please also tell us which version of Flightgear you are using. Do you use any additional scenery on top / besides terrasync?

Regarding the difference in runway numbers there is likely nothing that can be done immediately. The real world runway numbering may have changed, this happens from time to time. We currently have no way to rebuild the scenery for that region - but progress is being made towards a version 3.0 of the world scenery which should fix this problem and update the runways to a more recent layout. Unfortunately this will take some time.

For now all you can do is troubleshoot your double runway problem and stick with the "old" runway numbering.

[ludomotico]

Hi lgprocopio ,

I believe the scenery is OK, but the XML file defines an extra runway. This extra runway is listed in the launcher and on the map, but it is exactly on the same location that the real one. Hence, you won't notice any real difference.

I guess this will be fixed automatically in the next scenery iteration, but it will take a long time.

To fix this in your local system, edit the file at Terrasync/Airports/L/E/J/LEJR.threshold.xml and remove the extra runway.

(The exact location of the terrasync directory depends on your operating system)

This bug also happens at Pamplona (LEPP), but over there both runways are not completely aligned and they are visible at the same time: viewtopic.php?f=5&t=38884

[lgprocopio]

Hi, ludomotico,

I tried what you tell me, fixing LEJR.threshold.xml before posting, but it didn't work.

In fact it is not a big problem, it's only that in the scenery appears "21" or "03" painted on the head of the runway when you are taking-off, and ATC-Griffing Tower Radio informs you that you are in the wrong runway.

In real life, in the satellite photos, the runway numbers are "02/20".

I will try again modifying the xml file, just in case I did it wrong the first time.

[WoodSTokk]

The apt.dat and LEJR.threshold.xml are only text files.
I have both edited locally and now i see only RWY 02/20 in the launcher and in-sim map.
The runway painting can also be changed without rebuild.

[portreekid]

The threshold could be changed via groundweb.

[WoodSTokk]

The threshold could be changed via groundweb.

You mean the painting?
I have it already changed in the BTG file. I currently have 02 and 20 on the runway marking, in-sim map and in the launcher.

[portreekid]

No I meant the threshold.xml in Terrasync.

https://groundweb.azurewebsites.net/

[lgprocopio]

I have modified LEJR.threshold.xml file but I still have runways 03/21. This is the file content:

<?xml version='1.0' encoding='ISO-8859-1'?>
<PropertyList>
<runway>
<threshold>
<lon>-6.064814</lon>
<lat>36.734975</lat>
<rwy>02</rwy>
<hdg-deg>21.34</hdg-deg>
<displ-m>0.0</displ-m>
<stopw-m>0.0</stopw-m>
</threshold>
<threshold>
<lon>-6.055406</lon>
<lat>36.754269</lat>
<rwy>20</rwy>
<hdg-deg>201.34</hdg-deg>
<displ-m>0.0</displ-m>
<stopw-m>0.0</stopw-m>
</threshold>
</runway>
</PropertyList>

If you make zoom over the runway, in pink, you 'll see both numbers overlapped.

[WoodSTokk]

Here are my changes.

The content of the file '…/Airports/L/E/J/LEJR.threshold.xml':

Code: Select all

<?xml version='1.0' encoding='ISO-8859-1'?>
<PropertyList>
  <runway>
    <threshold>
      <lon>-6.06481368</lon>
      <lat>36.73497464</lat>
      <rwy>02</rwy>
      <hdg-deg>21.34</hdg-deg>
      <displ-m>0.0</displ-m>
      <stopw-m>0.0</stopw-m>
    </threshold>
    <threshold>
      <lon>-6.05540632</lon>
      <lat>36.75426936</lat>
      <rwy>20</rwy>
      <hdg-deg>201.34</hdg-deg>
      <displ-m>0.0</displ-m>
      <stopw-m>0.0</stopw-m>
    </threshold>
  </runway>
</PropertyList>


Next unpack the file '$FGDATA/Airports/apt.dat.gz', you receive the file 'apt.dat'.
Change this file according to this diff:

Code: Select all

--- apt.dat   2021-04-20 18:44:39.847688942 +0200
+++ apt-new.dat   2021-04-16 18:04:03.840349139 +0200
@@ -1036962,8 +1036962,7 @@
 19   18.66676209 -074.16049801 1 WS
 
 1       93 1 0 LEJR Jerez
-100   45.11   1   0 0.25 0 2 1 03   36.73497464 -006.06481368    0.00    0.00 3  0 0 1 21   36.75426936 -006.05540632    0.00    0.00 3  3 0 0
-100   45.11   1   0 0.25 0 3 0 02   36.73497500 -006.06481400    0.00    0.00 2  0 0 1 20   36.75426900 -006.05540600    0.00    0.00 3  3 0 0
+100   45.11   1   0 0.25 0 2 1 02   36.73497464 -006.06481368    0.00    0.00 3  0 0 1 20   36.75426936 -006.05540632    0.00    0.00 3  3 0 0
 21   36.73679737 -006.06446279  2  21.34   3.00 02  PAPI-4L
 21   36.73679701 -006.06446255  2  21.34   3.00 03  PAPI-4L
 21   36.75123165 -006.05635017  2 201.35   3.00 20  PAPI-4L


Pack the file again to 'apt.dat.gz'.

Last, for the scenery:
Unpack the file 'Terrain/w010n30/w007n36/LEJR.btg.gz', you receive the file 'LEJR.btg'.
Change the file 'LEJR.btg' with a hex-editor.
Position: 0x8bd7 change from: 0x33 to: 0x32
Position: 0x965f change from: 0x31 to: 0x30
Pack the file again to 'LEJR.btg.gz'.

[lgprocopio]

Hello, WoodSTokk,

Great !
I've applied your changes and now it works.
And Red Griffin ATC also tells me I am in the right way and I'm cleared to take off.

Thanks.

[pmorenogarcia]

Thanks to WoodSTokk for the explanations.

To make a contribution, if you are using the old scenery (v 1.0) you also must change the file 'Terrain/w010n30/w007n36/LEJR.btg.gz', but I think the changes are:

Position: 0x11bf4 change from: 0x33 to: 0x32
Position: 0x11c92 change from: 0x31 to: 0x30