Frequently Asked Questions


How do i install Draken?

Download the installer archive and unzip the contents anywhere on your computer, then double-click on the installer to run it. You will be prompted through each step of the installation process.

In what versions of Flight Simulator or Prepar3D can I install Draken?

Draken 5.0 is designed for Prepar3D v4 and will not work properly in earlier versions of Prepar3D or in any version of Microsoft Flight Simulator. You can install it in FSX with some tweaking, but it will look ugly and perform badly.

Draken 4.1 requires Microsoft Flight Simulator X SP2 or later. It can be installed in Prepar3D, but it will not work as intended and some major tweaking is needed. You are on your own there.

Draken 3.2 requires Microsoft Flight Simulator 2004 (FS9).

Why is there a scenery installed with Draken?

The additional scenery installed with Draken contains some additional navaids that simulate tactical navigation and landing systems formerly used by the Swedish Air Force. The ground stations are also modeled in the scenery. See the Flight Manual for more information.

Will installing a new version overwrite previous versions?

Draken 5.0 is installed outside of the Prepar3D program folder. All versions in the 5.x series will be installed in separate folders and should not conflict. Patches/hotfixes that are issued between the release versions may overwrite files in the current installation.

Draken 4.1 is installed in its own aircraft folder and in sub-folders within the main FSX gauges and sounds folders. The effects files are specific to each version and will not conflict with previous versions. The included scenery files will be updated from earlier installations and are fully backward compatible.

In the aircraft

All warning lights are off, why is the GW light blinking?

The general warning light will blink if the afterburner fuel valve is closed.

If you follow the checklist when starting the aircraft you should not have a problem, but if you jump into a saved flight or switch airplanes in flight (not recommended) it is easy to overlook the afterburner valve.

The rotating switches will not move when I click on them.

Some of the rotational switches in the cockpit (radio dials, weapon selector, etc.) cannot be operated simply by clicking on them, you must place the cursor over the switch and use the mousewheel to rotate the switch. This is intentional and not a bug, but we will probably bring back the possibility to click-select in the next update as it can be confusing.

Why are the textures so blurry?

Draken 5.0 uses 2048×2048 pixel resolution for the main exterior and interior textures. This means that you must enable high resolution textures in the Prepar3D settings, otherwise the exterior and the virtual cockpit will look blurred.


Why can’t I reach Mach 2?

Well, the 35J could not really do that, so neither can this simulation. But you can exceed Mach 1.8 with some effort. Take off with external tanks and climb on afterburner to 10-12 km altitude, then level off and continue on afterburner. Just watch the fuel gauge!

Mach 1.8

Why is the autopilot always on?

The autopilot controls the dampening system that prevents pilot-induced oscillation. The autopilot master switch should therefore always be on unless there is an autopilot malfunction. Altitude and attitude hold functions are then engaged/disengaged as needed with the pushbutton switches on the autopilot panel. If you switch off the autopilot you will get a general warning indication. In the real Draken the master switch was wire-sealed in the on position.

Switching between Draken and another airplane in flight is not recommended as this could screw up the autopilot settings.

General questions

Are Austrian, Danish or Finnish variants included?

The FS9 version includes a complete Austrian J-35OE exterior/interior model, but the FSX and Prepar3D versions only contain the Swedish J 35J.

A J-35OE version for Prepar3D V4 is on the roadmap, but there is no timeplan yet.

The Danish F-35 is very different in instrumentation and systems as well as structurally and aerodynamically. There are no plans for a Danish version at this point.

Are the weapons functional?

No, the weapons in all versions of Draken are just for show and the simulated radar has no targeting function.

There are several third party solutions for adding functional weapons to FSX and Prepar3D vehicles. You can probably modify Draken to use these add-ons, and you may also share these modifications within the limits of the EULA.

I’m stuck. How can I get help?

Read the Flight Manual which can be found on the Help page. It explains the procedures for startup, takeoff, climb, cruise, approach and landing, as well as how to use navigation systems, radios, etc. If you are really impatient, just use the checklist in the kneepad (although it may be difficult without first reading the Flight Manual).

For Draken 5.0 you can use the support forum to get help and to submit feedback. As a last resort, you can always use the contact form if you need help.


Can I use Draken for commercial purposes?

The payware Draken 5.0 for Prepar3D as well as the freeware Draken 4.1 (FSX) and 3.2 (FS9) are intended for personal use and are only sold to private persons. If you are a company or other type of organisation you must purchase a commercial license, regardless of how you intend to use Draken. Commercial licenses are quoted on request.

How much does Draken cost?

Draken 3.2 and 4.1 for Microsoft Flight Simulator are freeware, which means that they can be downloaded and installed without cost. The only requirement is that you register an account on this website. Your account will not be used for any other purposes than to communicate with this website. See the Privacy Policy for more information.

Draken 5.0 for Prepar3D is currently priced at 9€. This includes free updates for the 5.x model series.

Draken is licensed, not sold. No version of Draken is open source or in the public domain. See the EULA for the respective Draken version for the full license conditions.

I lost my download link for Draken 5.0, can I get a new one?

No problem. If you contact us using the same email address that you used when you purchased Draken, we will send you a new download link.