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Fly the Maddog X 1.5b476 Open Beta Available

Photo: Canadian Marconi CMS-900 and PMS.


Leonardo Software has announced the latest build 1.5b476 for the MD-82 and MD-83/MD-88 products is in Open Beta.

The upgrade is free of charge for all customers who own the 64-Bit edition. It is compatible with Prepar3D version 4.4 and v4.5 only. To rationalise development times, the company has decided to remove the non-PBR model options. The official stable version will be released in approximately two weeks.

New features include the Canadian Marconi CMS-900 coupled with the PMS, along with new cockpit customisations. A series of improvements and fixes ranges from new sounds to the improved GSX Level 2 integration, now making full use of the new features available.

If you own the MD-83 and MD-88 variants, you are now free to choose any of the three engine types for each airframe.

The new airline customisation options page.

New PFPX profiles includes all possible airframe/cabin layout/engine type combinations.

The OAM Vol II chapter 6 has been updated to include the CMS-900 and PMS.

The following add-ons are not compatible with CMS-900/PMS systems at the moment, but can be used with the Honeywell FMS without issues: Fs2Crew MaddogX reboot edition – Remote server – MCE: Multi Crew Experience – FSiPanel.

Full list of updates:



  • Added Canadian Marconi CMS-900 and PMS systems
  • Added new cockpit customisations in ‘Airliner Options’ (check ‘Fly the Maddog X User Manual.pdf’ – page 9)
  • Added mouse acceleration (if enabled in load manager) to VHF freq decimals in 8.33KHz mode
  • Added clock settings (except chr buttons) to the CM1/CM2 sync option.


  • Added the option to select -219 engine type for the MD-82 and -217A/-217C for the MD-83/MD-88 (TRC settings and performances will change accordingly)
  • Removed non-PBR option.


  • Added sound for auto/manual press lever and manual press wheel movement
  • Added sound for spoiler extended in flight
  • Added slat aerodynamic sound
  • All cockpit sounds now located in the aircraft sound folder.


  • Operation Manuals revision ‘Vol II chapter 6 – conditional procedures’, to include CMS900+PMS reference
  • ‘Quick Guide and ‘User Manual’ revision.



  • Minor bug fixes
  • Revised flight dynamics
  • Improved LOC CAP logic
  • Fixed and improved GSX/GSX Level 2 integration.


  • Improved engine spool-up timing and sound sync.


  • Fine-tuning of VC objects dimensions and position.
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