FSX Steam Edition: CH-701 install asks for "Lockheed Martin" folder—where is it?

FSX:SE doesn’t use a “Lockheed Martin” folder

That “Lockheed Martin” reference is aimed at Prepar3D (Lockheed Martin’s sim), not FSX Steam Edition. So no, you don’t need to create a Lockheed Martin folder, and you don’t need to install anything extra just for that.

What to do instead (FSX Steam Edition)

In FSX:SE the CH-701’s folders need to go into your FSX install folders, typically:

1. Find your FSX:SE main folder (where fsx.exe lives). Common locations are under Steam, but it depends on where you installed it.
2. Inside that FSX folder, copy the aircraft folder into:
   SimObjects\Airplanes\
   So you end up with something like:
   ...\SimObjects\Airplanes\CH-701\
   (or whatever the aircraft folder is actually named)

3. Copy any gauges to:
   Gauges\

4. Copy any effects to:
   Effects\
   (and if the package includes an Effects\Texture folder, those go into Effects\Texture\)

5. If the download has a Sound or Texture folder inside the aircraft folder, those stay with the aircraft as-is.

After installing

1. Start FSX:SE and check the aircraft selection menu under the listed Manufacturer/Publisher. Sometimes older freeware shows up under something generic, or the model name rather than “Zenith”.
2. If FSX prompts you to trust/publish gauges on first load, allow them (otherwise you can get a blank panel).

A couple quick checks so I can steer you precisely

• Is the CH-701 you downloaded packaged as a standard “SimObjects\Airplanes\…” structure, or is it a single installer .exe?
• When you unzip it, what top-level folders do you see (for example: Airplanes, Gauges, Effects, etc.)?
• Where is your FSX:SE installed (the full path to your FSX folder is fine)?

Post those details and I’ll tell you exactly which folders go where for that specific CH-701 package.