Included in this post is a picture showing RW25 elevation at EPKK. According to the FMC data it's 829 ft. According to the charts it should be about 781 ft. I have been trying to locate the datafile containing this information in order to change it. I have been looking under SIDSTARS folder for the PMDG folder and NAVDATA folder under PMDG folder as well. I can't find the datafile containing information on EPKK RW25 elevation which gives 829ft. wpnavapt under NAVDATA folder file contains values close to 781 but FMC does not upload these values. Any suggestion on where the 829ft data is located is appreciated. I am experience some strange problems when using ILS 25 EPKK. I presume editing will help.

Geir,I will have to check for sure with Vangelis on this but I believe it pulls that altitude from the FSX bgl files. The elevations in FSX do not always (or ever really) exactly match the real world ones that are on charts. What does the altitude actually show sitting on that runway (with the correct pressure set on the altimeter)? If it's 829 that's definitely what's happening.The wpnavapt.txt file in PMDGNavdata shows 779 for that runway, but again I don't believe the FMC uses this, I think it pulls from FSX directly. We have to because FSX doesn't have sloping runways, different people will have different elevations based on whatever scenery they have installed etc.

In the "NAVDATAwpNavAPT" file, each runway is given an altitude. So find EPKK, and for the specific runway change it to what you want. You need to know though that since FSX doesn't simulate sloped runways, the entire airport is at the same elevation. You should leave the runway values at the airport elevation for maximum sim-realism.The last 5 digits are the altitude, represented from column 70 to 74.EDIT: Well nevermind then :(

Edited March 6, 201214 yr by yos233

Indeed, on many runways, difference in elevation from one end to other can be quite substantial. Even 0.4% slope over 10,000ft makes some 40ft, and that is not unusual to have on a real runway.And many times, defined airport elevation, which is what developers usually uses for FS, is measured at reference point, that is nowhere near a runway.

Edited March 6, 201214 yr by Fabo

I have noticed while making procedures that PMDG aircraft use the elevation in the wpnavapt.txt file and then add 50ft to that figure to come up with a threshold crossing height. This is true to life, the real aircraft FMC does the same thing since your goal on landing is to hit the aiming point, usually between 1000 to 1500ft from the threshold - normally were the VASI/PAPI/GS takes you to.So the figure in the wpnavapt.txt file is "779ft" according to what Ryan said since I have not looked at it myself. You then add 50ft to 779 and that is why the FMC shows 829ft, which is the correct height you want at the threshold. Remember that the "RW25" waypoint you see in the FMC is the "threshold".Hope that clears it up a little.