SLX files are associated with Simulink, a simulation software. Simulink is a graphical programming environment that uses blocks and diagramming tools as basic elements that user can use to create complex models. SLX format is the successor to MDL format.
MDL files store 3D models of aircraft used in Microsoft Flight Simulator computer games. What are the contents of an MDL file? MDL files store different data depending on which version of Flight Simulator they are used. Older MDL files used DLL libraries to store w aircraft models.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the SLX file after converting to MDL may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from SLX to MDL to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting SLX to MDL does not meet your expectations, you can simply try to find on the Internet a different version of your file in SLX format, properly converted to a MDL file by someone else. If this fails, use the information provided in the further part of the website.
Unfortunately, if after performing the two previously described steps (trying to find your SLX file converted by someone else, and the attempt to convert it to MDL on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the SLX file in its original format (without conversion to MDL file). Such a solution will be difficult to implement, but it certainly will give the best result.