Hi,I don't use the AP very much but was working with an ILS approach at KSEA and it is way off. I have installed, UTX , and this was the only addon I thought might have an effect on this but not sure.I really have no other addons that aside from GEX that might have something to do with the runways lat/long position. Any Ideas? RegardsBob

Definately a frequently asked question here...download the FSX registry repair tool ( FSX registry repair tool ) here and run it...it may help solve your problem, which has nothing to do with GEX.

How would the registry repair tool help with ILS?Many ILS approaches, even in real life, are offset a bit and marked so on the approach plate. Also in FS some ILS are located at the opposite end of the runway.Did I mention that the registry has nothing to do with this?

How would the registry repair tool help with ILS?Many ILS approaches, even in real life, are offset a bit and marked so on the approach plate. Also in FS some ILS are located at the opposite end of the runway.Did I mention that the registry has nothing to do with this?

This suggestion can't hurt and apparently has helped many with this very issue...check out these links:http://forum.avsim.n...ost__p__1798292http://forum.avsim.n..._1#entry1848447http://forum.avsim.n..._1#entry1881414

All with PMDG planes, none with the default planes.

Yep, flying the Maule and a couple of carenado GA's and it was off on all of them. I just did a complete reinstall too. Maybe it thinks I am flying into a different airport for some odd reason. I am going to try this again as one thought that crossed my mind was I had about a 20mph crosswind. Wondering if I was just being pushed. I will try again in the morning and check back.Bob

Yep, flying the Maule and a couple of carenado GA's and it was off on all of them. I just did a complete reinstall too. Maybe it thinks I am flying into a different airport for some odd reason. I am going to try this again as one thought that crossed my mind was I had about a 20mph crosswind. Wondering if I was just being pushed. I will try again in the morning and check back.Bob

A crosswind component has nothing to do with the accuracy, or lack of, of the localizer beam, Bob. To fix a bad ILS - search out and download Airport Design Editor 9x. When you do - make sure that your version of the FSX SDK is installed on your PC, and that it's the same version as your sim.

I just did not know with the fsx programming if something had been overlooked. I will check further into it, and thank you very much for the advice!! I will get to the bottom of it. All of those planes are ready for their annual anyway so maybe the avionics need to be calibrated :( Bob

A crosswind component has nothing to do with the accuracy, or lack of, of the localizer beam, Bob. To fix a bad ILS - search out and download Airport Design Editor 9x. When you do - make sure that your version of the FSX SDK is installed on your PC, and that it's the same version as your sim.

All of those planes are ready for their annual anyway so maybe the avionics need to be calibrated :(

Not knowing the length of the flight, but did you calibrate your heading indicator before you locked onto the ILS beacon?

Also check you don't have duplicate AFCAD files.I've had similar problems after installing addon airport where I previously had AFCAD for it - could usually tell though by taxiways/grass layouts looking strange.

Not knowing the length of the flight, but did you calibrate your heading indicator before you locked onto the ILS beacon?

Heading indicator has nothing to do with tracking an ILS, thats a reference only.

Graham, I will check that thanks.Meshman, I know there is a command for that calibration but have never used it. Even though it was stated from another gentleman that this has nothing to do with the ILS approach, at least in FSX, that is something maybe I should do just for the realism aspect. ThanksBob

Not every approach is going to take you directly straight to the runway, a lot are offset or back course, not every ils is cat3 capable where your airplane follows it to touchdown

Hi,I don't use the AP very much but was working with an ILS approach at KSEA and it is way off.

Which runway? All of the charts for KSEA may be seen here. Pick the one you need to verify from the list on the right side of the page, and see if it is offset:http://flightaware.com/resources/airport/KSEA/APD/AIRPORT+DIAGRAM

HiWell whent its this far off it has to be something else. I understand what you are saying though. I am almost landing on the East taxiway.Bob

Not every approach is going to take you directly straight to the runway, a lot are offset or back course, not every ils is cat3 capable where your airplane follows it to touchdown

Father Bill,yes it is 16L, 163.4 But this should not matter should it, as the ILS is the guiding light? Maybe I am missing how an ILS actually works.Bob

Which runway? All of the charts for KSEA may be seen here. Pick the one you need to verify from the list on the right side of the page, and see if it is offset:http://flightaware.c...AIRPORT+DIAGRAM