After much research I may have a solution as to why ATC and the engines won't start...Is there a limit to the APU run time? I start the APU (not ground power) after loading cold and dark. after say twenty minutes, I'm not finished programing, GSX etc.. the APU run light is still illuminated but ATC is gone so the engines don't start. This is a dumb question, but how (and how long) can I use external power before switching to the APU? On some add ons the APU run time seams to be unlimited or an actual external power unit can be seen (animated) externally.

I'm having a few issues with GSX with my CS 757-200. When I want to use GSX for my aircraft, the programming of where everything is doesnt match. For example, when the stairs extend to the door, instead of stopping at the bottom of the door they stop extending about half way up the door and it doesnt match. Wonder if anyone has a patch so that it corrects this issue

Markoz wrote on Jan 8^th, 2019 at 1:48am:


Please read this whole post.

I posted my RR gsx entry. Are you using the one I posted?
I know that my gsx cfg file works in fsx.

If you're using mine make sure the folder gsx.cfg is in matches the folder name in the simobjects/airplanes folder. You can check this very quickly. Load the aircraft in question and open the gsx aircraft editor. At the top it'll say one of three things. I dont remember the exact wording but you can figure it out.
1, using data from aircraft.cfg(you do not want this)
2, using gsx internal data(fsdt made this and could possibly be bugged)
3, using data from %appdata%(I dont remember the exact path)

The first one will ALWAYS be broken. that one won't have the door codes or proper alignment.
The second one was made by fsdt and they could have made a mistake. You can override it by making your own or placing a gsx.cfg file in the correct folder.
The third is a user created one.

Keep in mind that internal gsx aircraft data are not kept in the appdata folder. They're probably stored elsewhere or are embedded in the actual program.

You can create the folders in the appdata gsx folder. But they HAVE to match the simobjects/airplanes folder.

Each aircraft has to have its own entry. Mark, the reason that the others are worse is because they are most definitely using aircraft.cfg data. Every single aircraft has to have it's own gsx.cfg. some are handled internally. but the ones that are not will have to have it's own file. Luckily all of the 757s share the door placement and door codes. The 4d will have an extra entry but it too is shared among the other 4d. So you only need to do it twice. Then just create the folder in the appdata folder and copy the gsx.cfg folder from one a paste it into it's own folder. Again the folder HAS to match the simobjects/airplanes folder. The reason the PW works is because its supported internally. The RR is not.



As for the question about apu and engine start.  Make sure theres air going to the apu. Also make sure that the needle is around 40. You can turn the packs off temporarily. if there's not enough air the engines wont start. Regarding the apu, the apu uses fuel. I'm pretty sure the fuel it uses is from the left and right tanks. If theres no fuel the apu wont start. Also I've noticed that if you change fuel amount while the apu is running it will cut off. Simply set the apu switch to off then start it again and it will work. The apu has no time limit. I've left it running on a 6 hour flight before. It will stay running until you turn it off or all the fuel is used.

Markoz wrote on Jan 10^th, 2019 at 11:21pm:



That's the old way of doing it. As far as I know that no longer works. At least it didn't last time I tried it. press the windows key and R at the same time and type in %appdata% and press enter. Go to the virtuali folder and open the airplanes folder. the airplane folders in there is where the gsx.cfg files go. If the airplanes folder doesn't exist you can create it then create the RR folde inside virtuali\airplanes if needed. You can also create the folder by opening the aircraft editor with the RR loaded and changing something.

Sorry I haven't gotten back to you, been busy.

Markoz wrote on Jan 18^th, 2019 at 1:54am:


you're right. they changed it since I last checked. It can now read from both airplane root and appdata folder. I just tested all 4 RRs in P3D4 and they work for me. I'll go ahead and upload an archive that has the folders with the gsx.cfg files. You can either extract them into the appdata folder or extract them into the simobjects folder. You could do both as well.


These files defintely work for me. I included the 4D as I did them before.


So open the zip, drag the folders into either the simobjects folder or the appdata airplanes folder. It has correct folder names so extracting directly to the simobjects folder is fine, just say yes if it asks to merge.


If you have any issues I'm not sure what to say as I just tested them. I suppose you could run the live updater and if that doesn't work I'm stumped. If all else fails, you could post on the GSX forums.

They will probably never support the RR internally. FSDT is annoying like that. They never supported the CS B773 so I had to make my own. And the 737 never got any support at all. It's weird. Not sure why FSDT does that.


It'd be nice if CS would include a gsx.cfg in their aircraft. It's not that hard to do. I'm not complaining, it'd just be nice so they can save people some time. Especially since they use custom doors so it can sometimes be a hassle to make it functional at all.

Has anyone made a GSX config for the freighter?

KBUF_Aviator wrote on Jan 23^rd, 2019 at 9:21pm:

Try this: https://7x7pilot.weebly.com/gsx-configs.html

Markoz wrote on Jan 2^nd, 2019 at 11:20am:


Exactly the same here too.