Aerofly FS 4 – Duo Discus Free Add-On Download

Duo Discus in Alps


The Duo Discus is a high performance glider from the German manufacturer Schempp Hirth. We have recreated this aircraft for Aerofly FS so that you can fly it in the sim. Our Duo Discus comes with several different repaints, some with and some without winglets. The handling characteristics and performance values have been set-up together with a real world Duo Discus pilot and are pretty close to the real world aircraft which make the experience quite realistic and fun.


  • Great handling characteristics
  • Realistic performance and glide ratio
  • Realistic yaw string simulation
  • Realistic magnetic compass
  • Realistic wing flex
  • Front and rear seat view
  • Canopy can be opened
  • Side windows can be opened
  • Animated stick and rudder pedals
  • Forward facing anti-collision light in the canopy which can be switched off
  • Optional winglets
  • Fully clickable cockpit, all switches, buttons and levers work
  • LX S100 Vario with working compensated, average, MC and last thermal average needles
  • LX S3 Vario with working compensated, average and netto needles, arrival height display based on Aerofly navigation route
  • Switching between thermal and speed vario mode, with front and rear master switching
  • Working COM unit
  • Retractable landing gear with gear warning, that can also be switched off
  • Smartphone moving map
  • Temperature indicator

Credits and Copyright Ownership

Duo Discus 3D model and textures:
Matthew Ivey

Pilots 3D model and textures:
Bertrand Augras (beber)

Additional TMD programming:
Jan-Hendrik Hanuschik (IPACS)


Use it at your own risk. The Duo Discus is a freeware product which has been tested on a Windows 10 installation of Aerofly FS 4 and should also work on Mac and Linux versions. Use with VR hands should be supported but is untested. Some features are work in progress and may or may not be extended over time.


Latest Version: 2024-05-10
Tested with: Aerofly FS 4 version (2024-05-10)

46.36 MB - downloaded 329 times


Please extract the downloaded zip file and move the ‘duodiscus’ folder into your user folder ‘aircraft’ directory:

Windows PC
C:\Users\%USERNAME%\Documents\Aerofly FS 4\

Mac OS
Macintosh HD⁩/Users⁩/…/Library⁩/Containers⁩/com.aerofly.aerofly-fs-4-mac/⁨Data⁩/⁨Library/Application Support⁩/Aerofly FS 4/


Duo Discus GN

Duo Discus H3

Duo Discus WY

Duo Discus front cockpit

Duo Discus rear cockpit