Prepar3D V5.2 Hotfix 1 Suite

The Lockheed Martin Corporation development team is pleased to announce the availability of Prepar3D v5.2 Hotfix 1 (5.2.22.27615). This hotfix contains resolutions for high priority issues identified after the Prepar3D v5.2 release.

Prepar3D v5.2 Hotfix 1 (5.2.22.27615) - Date: June 30, 2021

Client Fixes and Improvements
- Added configuration option to use HTML5 Menu and Information Text, defaulted to off.
- Fixed issue preventing views from rendering on Intel graphics cards in some cases.
- Fixed performance issue with multiple views when using vsync.
- Updated default cloud visuals. Requires running the “Delete Generated Files” script in the Prepar3D installation directory or manual removal of the VolumetricClouds.cfg file located @ “%appdata%\Lockheed Martin\Prepar3D v5” directory after updating.
- Improved performance of autogen building and scenery objects.
- Fixed crash on AMD cards with particle shadows enabled.
- Fixed issues with HTML5 Menus and Information Text causing black screens and stutters when opening.
- Fixed issue where changing Volumetric Cloud settings would not update graphics profile name in settings.
- Screen is now blacked out when crashing.
- Fixed issue with multi-UV PBR materials not working properly in some cases.
- Prevent Developer Menu from being dragged offscreen when docked.
- The alt key now opens and closes the VR menu similar to the standard menu bar.
- Fixed crash that could occur when moving views across displays on different graphics cards.
- Fixed issue where menu bar could remain hidden after loading scenarios in some cases.
- Fixed issue where Weather UI was not correctly showing negative values for visibility layers.
- Performance and stability improvements for Oculus VR headsets.
- Fixed issue where weather changes made through the UI would interpolate instead of instantly applying in some cases.
Scenery Fixes and Improvements
- Fixed missing PPL_Construction1_LM texture.
SDK Fixes and Improvements
- Added PDK function to IMultiplayerService to set transmit and receive frequencies for voice transmission.





Training meets reality with Lockheed Martin’s Prepar3D simulation software. Private pilots, commercial organizations, academia, and militaries rely on Prepar3D for immersive, experiential learning.

Prepar3D (pronounced “prepared”) is a visual simulation platform that allows users to create training scenarios across aviation, maritime and ground domains. Prepar3D engages users in immersive training through realistic environments.

Ideal for commercial, academic, professional, or military instruction. Prepar3D can be used to quickly create learning scenarios anywhere in the virtual world, from under water to sub orbital space.

Prepar3D can be used for a wide range of learning scenarios including vehicle procedures training, cockpit familiarization, flight planning, air traffic controller training and emergency response preparation. As a commercial-off-the-shelf product, Prepar3D provides a cost effective training platform that evolves with technology.

Prepar3D v5, the first step in the development of an all new platform built for next generation simulation and training, was released on April 14, 2020. With the introduction of an all new DirectX 12 rendering engine that brings increased performance by harnessing the latest graphics technologies, this release is a foundational cornerstone for bringing new capabilities and features to solve tomorrow’s training needs. Prepar3D v5 provides enhanced weather and water visuals with the integration on Simul trueSKY and NVIDIA WaveWorks 2.0. In addition, the entire globe was updated to improve terrain, landclass, mesh elevation, and shorelines. More than 24,000 airports were reviewed and updated to ensure accuracy while the ability to slope airports was added to the SDK.


Lockheed Martin Corporation, incorporated on August 29, 1994, is a security and aerospace company. The Company is engaged in the research, design, development, manufacture, integration and sustainment of technology systems, products and services. The Company operates through four segments: Aeronautics; Missiles and Fire Control (MFC); Rotary and Mission Systems (RMS), and Space Systems. The Company also provides a range of management, engineering, technical, scientific, logistics, system integration and cybersecurity services. Its main areas of focus are in defense, space, intelligence and homeland security. The Company serves both the United States and international customers with products and services that have defense, civil and commercial applications, with its principal customers being agencies of the United States Government.

Product: Prepar3D
Version: 5.2 Hotfix 1 (build 5.2.22.27615) *
Supported Architectures: x64
Website Home Page : www.prepar3d.com
Languages Supported: english
System Requirements: PC **
Size: 73.4 Gb