I have recently experienced a failure of the ILS glideslope at one of my paid airports. FSDG- FACT.

The frequency is correct both on Radar Contact and the PMDG 747-400 and the approach locks in fine.

However, the glideslope is way under the plane and even at 1000' at 5nm from the runway, I cannot get near it. It is as if it is almost level with the ground.

I do not know where to look. What generates the glideslope  is it the Airport, NavData, the plane itself or what?

Any help much appreciated.

Look in the scenery AFCAD. You'll need ADE for that.

I also have FSDG FACT and went for a check flight approaching runway 01 (110.30) and 19 (109.10) using visible flight path. It looks perfect to me from the visible flight path and from the instruments in the cockpit.

What I have in mind you may have taken the wrong frequency or have another afcad active. You may have used another FACT before buying the one from FSDG. My FSDG-FACT afcad is not modified. It's correct on my place and it's called AFD_FACT_v5.bgl and I use p3dv5.3.

Regards

Dan

1 hour ago, blaunarwal said:

I also have FSDG FACT and went for a check flight approaching runway 01 (110.30) and 19 (109.10) using visible flight path. It looks perfect to me from the visible flight path and from the instruments in the cockpit.

What I have in mind you may have taken the wrong frequency or have another afcad active. You may have used another FACT before buying the one from FSDG. My FSDG-FACT afcad is not modified. It's correct on my place and it's called AFD_FACT_v5.bgl and I use p3dv5.3.

Regards

Dan

Thanks Dan.

I have that exact file and no other version of FACT files show up in a search. It has worked fine ever since I bought it, so I doubt if it is an old version that is conflicting. I deleted and re- installed the airport and ran Makerwys, so the info should be up to date.

Tomorrow, I will try a flight to another airport and see if ILS works. Looks like it is going to be a long painful process.

1,000 ft 5 miles from the runway is way too low anyway. At that distance you would typically be at around 1,500 ft

10 minutes ago, DavidP said:

1,000 ft 5 miles from the runway is way too low anyway. At that distance you would typically be at around 1,500 ft

Exactly what I am saying. Even at that height the Flight path is still below me.

Don't forget https://www.aero.sors.fr/index.html may be of help in this if you are using "current" charts / FMS data.

Sounds like it could be an elevation issue. Does your aircraft actually intercept the glidescope if you fly low enough and is then taken "underground"?

I haven't been able to get low enough without crashing. It seems to be at ground level. So, I think the answer is yes.

17 minutes ago, IanHarrison said:

I haven't been able to get low enough without crashing. It seems to be at ground level. So, I think the answer is yes.

Can you check if the airport scenery is at the top of the layers? Try Lorbi's product if you have it? Do you have Orbx Africa LC?, if so ensure the FACT scenery is on top of it.

Using ADE you can search for all active Airport BGLs for a given Airport, and de-activate any that may cause a problem.

2 hours ago, G-RFRY said:

Using ADE you can search for all active Airport BGLs for a given Airport, and de-activate any that may cause a problem.

The title "Beyond my knowledge" suggest that the threadstarter can not follow your cryptic hint.

You may want to explain this procedure in a way, ordinary people can understand it.

Thanks for all the suggestions.

Good news. After doing a re-install of the Airport (to no avail), and checking all the frequencies (with ADE!) I decided to try a repair of the actual PMDG 744 and for good measure to reload NavData from Navigraph.

That seems to have fixed it. This morning I flew both 01 and 19 approaches and the Localiser and Glideslope worked perfectly.

I have no idea what caused this to happen but thanks to all the helpful people out there.

I am back in business!