☀ 2021 MSFS SIM UPDATES - Part 1 (unofficial)

This is my Personal Understanding of recent Updates & Change Logs

:sunny: 2020 MSFS SIM UPDATES & SDK - Part 1 Change Logs (unofficial) Aug-Oct

:sunny: 2020 MSFS SIM UPDATES & SDK - Part 2 Change Logs (unofficial) Nov-Dec

:sunny: 2021 MSFS SDK Change Logs - Part 1 (unofficial) Jan-Jun

:sunny: 2021 MSFS SDK Change Logs - Part 2 (unofficial) Jul-Dec

:sunny: 2021 MSFS SDK Change Logs - Part 3 (unofficial) Oct-Dec

:sunny: 2021 MSFS SIM UPDATES - Part 1 (unofficial) Jan-Jun (This One)

:sunny: 2021 MSFS SIM UPDATES - Part 2 (Unofficial) Jun-Dec


02/16/2021 World Update 3 *
03/09/2021 Sim Update 3 * (BIG UPDATE !! )
03/26/2021 Patch * (Performance Patch)
04/15/2021 World Update 4 ---- France & Benelux*
05/25/2021 Sim Update 4 * (Another BIG one)
05/26/2021 ** Dev Q & A ** Twitch
06/24/2021 World Update 5 ---- Nordics Europe*

02/16/2021 World Update 3

World Update : United Kingdom


  • Fixed various crashes across the title
  • Fixed a specific crash while using Little Navmap in Bush trip activities


  • Several terrain spikes have been fixed, including incorrect cases of water elevation issues
  • Water masks have been updated across various locations in the world
  • Reduced the frequency of water artifacts appearing on cliffs
  • Noise issue affecting clouds has been fixed


  • The ‘Activate/Deactivate VR’ button is now always displayed in the main menu (bottom left corner of the screen) when a VR headset is plugged in. If no controls are displayed on this button, then it means that no controls are bound to this action.
  • When the toolbar is opened, it does not block interactions anymore with other menus displayed in front of it.
  • The cursor doesn’t jump anymore when moving across the Options menu in the cockpit.
  • Gray boxes don’t appear anymore when using the ‘Travel to’ feature in VR.
  • After leaving VR mode, the sim window is no longer forced on top and the player can drag and drop any other window over it.


  • Fixed induced speed calculation bug with bi propeller engines
  • Fixed the plane crash detection when landing on iced water with crash detection ‘ON’
  • Fixed swapped screens in DA62 TestPilot version
  • Fixed VS Knob Turn not working on the Airbus A320Neo
  • Improved flaps system of aircraft: Aircraft creators can now move the wing surface’s position and camber with each flap system at each flap level
  • Improved ground effect wing to ground interaction system to avoid pitch dip at rotation on some aircraft


  • Latest AIRAC cycle has been integrated and is now available


  • CH ECLIPSE YOKE default preset have been added
  • Fixed Thrustmaster TCA Quadrant ENG 1+2 don’t start engines

Dev mode:

  • New version of the console is now available
  • Fixed an issue related to UTF8 encoding in the BGL compiler

Scenery Editor:

  • New feature to group, rename, re-order, hide and lock items in the scene list
  • Fixed freeze during saving
  • New airport light system
  • Add a button in airport properties to generate taxiway signs
  • Improve heightmap edition
  • Don’t lock runway profile extremity
  • Fix taxiway sign size (wasn’t correctly serialized in BGL)

Aircraft Editor:

  • Fixed an issue with the saving of “static_thrust”
  • Added a new button in the Camera section of the aircraft editor to teleport the current developer camera to the position, rotation and zoom of the selected one.
  • Creation of a new tool to edit only a camera file (cameras.cfg) : it matches with the camera section of the aircraft editor


  • Security vulnerabilities in the WASI layer have been reported and fixed
  • Fixed StringFormat conversion to NanoVG alignment in GDI+ layer
  • Reworked MouseAircraft left gauge to provide clearer information


  • Fixed flight load/save (SimConnect_FlightLoad / SimConnect_FlightSave)

===== End of ----- 02/16/2021 World Update 3 - - World Update : United Kingdom ====

03/09/2021 SIM Update #3.



  • FSX legacy liveries available on appropriate planes : Kenmore, Emerald Gold, Global Freightways, Orbit, Pacifica and World Travel
  • Contrails are now displayed on the player’s aircraft (MP and AI are not supported yet)
  • New customization menu in the World map to further adjust the aircraft to perfectly match specific real world aircraft. The changes only affects the next flight and they are not persistent.
    • Empty CG position: We can now have a different empty CG position, just like real world aircraft that all may have slightly different empty balance.
    • Wear: We can now increase the wear of the fuselage to get a slightly higher parasitic drag and simulate older aircraft.
    • Control surface limits: We can now adjust the maximum angle limits for elevator, rudder and aileron control surfaces to simulate the slight difference that may exist between different real aircraft. Check Type Certificate Data Sheet (TCDS) Information for real world aircraft control surface angle limit variation tolerance.


  • Fixed various crashes across the title
  • Fixed a specific crash while using the manual cache


  • Latest AIRAC cycle has been integrated and is now available


Autopilot / FMS:

  • Corrected an issue which prevented the VS Wheel from working in FLC mode on the Cessna Citation Longitude
  • Disabled the autopilot which was incorrectly set as available on the JMB VL-3
  • Corrected an issue preventing the use of the VS Wheel to control the pitch on some planes
  • Corrected an issue with the VS Knob not properly responding to commands on the Airbus A320neo
  • Prevented the autopilot from being polluted by incorrect data when exiting slew mode
  • VOR/ADF Feature implemented
  • VOR/ADF - Airbus A320neo FMA Adaptability
  • Fixed General Aviation planes displaying FMS instead of GPS
  • G3000 - Fixed FlightPhase & NavSource display not showing properly
  • Fix roll hold mode behaving like wing leveler
  • Removing auto alignment of localizers with the runway when the heading given by the localizer and the heading of the runway are too different
  • Add TRK/FPA features to Airbus A320neo
  • Boeing 747-8 Intercontinental : LNAV and VNAV does no longer engage automatically when activating the Autopilot.


  • Boeing 787-10 Dreamliner - Enhanced HUD Projection
  • Airliners – Speed Trend arrow is now more reactive and accurate
  • Fixed some bearings indicated outside of the 0-360 range in Garmin instruments
  • Fixed a bug in GNS430 and GNS530 where the cursor did no automatically jump to “Activate” in Direct-to page on validation of the entered ident when there is no ident duplicate
  • Added airport ident and ILS runway name in GNS530 when tuning nav radio to a localizer
  • Fixed flight director roll not working when autopilot is not activated
  • Added wind display in G3X Touch in PFD or Splitted mode
  • Added possibility to adjust brightness level in G3X Touch
  • Added possibility to adjust brightness level in G3000
  • Fixed issue in FLT files that lead to flight plan not being loaded in instruments
  • Fixing the display of LDA approaches which were wrongly aligned to the runway at the end of their path


  • Fixed Beechcraft Baron G58 incorrectly having automixture enabled
  • Corrected an issue causing the AutoStart sequence of the Boeing 747-8 Intercontinental to activate the batteries later than expected
  • Re-enabled the STARTERX SET keys which used to throw an error and toggle the starter. They now correctly set the starter to ON or OFF
  • Corrected an issue causing the starter to affect the plane’s rpm excessively when the piston_power_scalar of the plane is >1
  • Corrected an issue which would prevent the engine from ever shutting down while in unlimited fuel mode.
  • Beechcraft Baron G58 engines adjustment
  • Beechcraft Bonanza G36 engine idle RPM adjustment

Cockpit interaction:

  • Corrected a number of minor XML errors
  • Improved the behavior of knobs that repeatedly send an action to prevent it from sending multiple events at once
  • Corrected the fact that the Avionics switch of the Pipistrel Virus SW121 was off when starting in cruise
  • Enabled the THRT Knob on the ATC Panel of the Airbus A320neo
  • Enabled the option to push the backup baro knob of the Boeing 747-8 Intercontinental to set it in Standard Altitude mode
  • Made the copilot’s HUD interactable on the Boeing 787-10 Dreamliner
  • Enabled the clock’s buttons on the Boeing 787-10 Dreamliner
  • JMB VL-3 Propeller Instrument Fix
  • Fixed Mouse Events not handled correctly on Tactile Screens
  • AS3X Touch - Removed com active ident display
  • Cessna Citation CJ4 - Fixed default VT Speed
  • Boeing 787-10 Dreamliner - Fixed ND interaction Model
  • Fixed the “COM RECEIVE ALL” simvar always returning false on planes without a configured COM 3, leading to problems with some third party content
  • Beechcraft King Air 350i - Baro knobs have been added

Control surface:

  • Corrected Flaperon animation on Boeing 787-10 Dreamliner which was incorrect in the air.
  • Corrected an issue preventing the autobrakes of the Airbus A320neo from enabling on the Funchal mission.
  • Fixed Beechcraft Baron G58 inoperative rudder trim


  • Corrected some emissive elements staying active when they should be off on the Boeing 787-10 Dreamliner.
  • Corrected some emissive elements staying active when they should be off on the Boeing 747-8 Intercontinental.
  • Corrected some emissive elements staying active when they should be off on the Airbus A320neo.


  • “Mixture: Lean for Altitude” checkpoint can now be auto completed without issues
  • Added a Brake Release checkpoint to the Aviat Pitts Special S2S checklist
  • The Checklist entry “Mixture : Rich below 3000 feet” is now correctly displayed as such instead of “300 feet”
  • Engine should now start without struggle and auto completion of the “Starting procedure” on the Aviat Pitts Special S2S should now work
  • Corrected issue on the Cessna 172 Skyhawk’s checklist which prevented the copilot from correctly executing the “Set Transponder to Alt” step
  • Corrected Issue on piston planes checklists which prevent the steps relating to setting the right mixture from correctly executing
  • Corrected issue on the Beechcraft Baron G58 which caused the copilot to not keep the starter active long enough to reach a combustion when auto-completing the checklist
  • Corrected issue on the Boeing 747-8 Intercontinental’s checklist which caused the step to activate all fuel pumps to not properly validate on some airports


  • External HUD - Fixed AP Ref speed/altitude not always displayed
  • 3rd View HUD - Fixed HSI not showing approach course if approach is armed
  • 3rd View HUD - Fixed Trim & Flaps display
  • Fixed crash when using a plane with an incorrectly setup FuelSystem.
  • Fuel pressure gauges should now display correct pressure level indications
  • Fix crash when teleporting to approach
  • Fixed external HUD not updating at correct framerate


  • A ‘No binding’ icon is displayed when no control is assigned to a VR action
  • If there are no controls assigned to the camera re-center, then the player cannot switch to VR and they are asked to assign a command to this action
  • Players can now access to the controls menu directly from the VR Mode page
  • HOTAS are now specified in the VR bindings (VR Mode page)
  • VR is now functional when HDR is enabled
  • The panel reset feature is now functional in VR
  • A dark background is displayed when opening a menu in the cockpit
  • When a toolbar menu is opaque, it will now hide properly menus that are positioned behind it
  • Labels are now properly displayed in the VFR map
  • Various fixes on the toolbar and the panels display
  • The mouse cursor is now properly positioned in VR on the Cub Crafter X Cub instrument panel
  • Cockpit handles should not teleport anymore when clicked and dragged
  • It is now possible to switch the throttle to CutOff position in the Daher TBM 930
  • The Flap control in the Cessna 172 Skyhawk G1000 doesn’t return to fully retracted position when interacting with it with the mouse


  • In case there is an ASOS/ATIS and Center/Departure/Approach agent on the same frequency in the same area, the ATIS/ASOS will not air its message if the player has been handed off to the Center/Departure/Approach agent to prevent the ATC flow from being stuck

  • Add leading zero for runway numbers in ATC communications when necessary

  • Fix ATC agent pronouncing letter by letter airports names during communication with the player

  • Fix ATC agent attributing cruise altitude instead of proper approach altitude when the first waypoint of the approach do not hold altitude information

  • Wind panel UI update for wind and gusts settings


  • Properly set runway when setting approach in the World Map
  • Changing behavior of Precision Marking field in Scenery Editor to allow for the marking to be displayed in case of short runways
  • Displaying all waypoints from data on the World Map and changing zoom scores to compensate for the amount of new points
  • Fixing behavior of World Map which was attributing closed runway over opened runway under certain conditions


  • Fix outline against clouds and object in game introduced in the previous update
  • Lights should no longer be too dark under mountain shadow with low quality setting
  • Taxi sign lights size has been tweaked



  • Revamped documentation website now live on https://docs.flightsimulator.com
  • Added Sample for AirtportServices
  • The left gauge in the MouseAircraft sample has been reworked to provide clearer information.

Scenery Editor:

  • Trimmed leading spaces in package title
  • Fixed a bug that would not update the Scene list when adding an object while having no object selected
  • Fixed an issue to avoid unwanted airport modification
  • Fixed a crash when hiding all TaxiwayPoints of an Airport


  • Fixed GDI+ StringFormat conversion to NanoVG alignment
  • Fixed potential vulnerabilities in the WASI layer
  • Tweaked our system to avoid hampering module debugging with recurring exceptions.


  • Load and Save Flight using the FlowFlightManager.


  • Throttle mapping reversed for the Thrustmaster HOTAS Warthog
  • Beechcraft King Air 350i does not change pitch with VS wheel when Autopilot is enabled
  • On rare occasions, Aircraft screens might not initialize correctly upon loading a flight. Please restart the flight to fix the issue.
  • The plane continually loses altitude causing it to crash after loading into the Attitudes & Instruments Training Flight

=============== . . End of — 03/09/2021 SIM Update #3 . . =======


03/26/2021 PATCH


  • Performance optimizations when flying close to large airports such as Dallas-Ft Worth (KDFW)
  • Performance optimizations of server requests when in the menus and during flight


  • The Aeronautical Information Regulation And Control (AIRAC) cycle is being updated with new navdata.

============== End of 03/26/2021 PATCH ========


04/15/2021 World Update 4 -

France & Benelux


  • Fixed reduction of tree display distance that was caused by smaller tree sizes
  • Water mask has been updated with latest locations


  • Localization has been added for Japanese and Dutch
  • Incorrect fuel weight calculation when switching planes in the “Weight and Balance” screen has been fixed


  • S7 Airbus A320neo livery has been added
  • KLM Boeing 787-10 Dreamliner livery has been added
  • Fixed screens not turning on under rare circumstances
  • Fixed black screens for various Aviat Pitts Special S2S liveries
  • Updated Diamond DA40NG speed, ground roll and fuel consumption


  • Honeycomb device 10 degrees heading issue has been fixed


  • Fix sim rate speed change according to the various activity types
  • Autopilot has been fixed in the second tutorial



  • Added a new feature on the DevMode toolbar to let you know when a new release is available for download. It also includes the release notes for this update and the previous ones
  • Improved the DevMode font, which could be blurry on some screens
  • Added an Airport Creation Wizard to ease the creation of new airports
  • New option to flag if a package is designed for Xbox and/or PC. This is mainly in preparation for some transparent changes in the back-end and shouldn’t affect your current work. Simply select this option if you consider releasing your content on Xbox via the in-game marketplace in the future.


  • Massive update to the Scenery Editor documentation
  • Added External Installer Sample
  • Added a page about VR for cockpits
  • Added liveries sample
  • Split « Documentation » tab in 2 links, « Open local » which is downloaded with the SDK update or « Open online » which redirects to docs.flightsimulator.com


  • Fixed a bug on TaxiwaySign properties to prevent from typing invalid characters
  • Removed inactive options: Cast shadow & No Snow
  • Fixed a crash when using Importer from AP
  • Fixed a bug that didn’t show object test radius when selected
  • Fixed a bug on taxiway lines that were no longer displayed
  • Fixed a buffer overflow on Display Name
  • Fixed a crash when exiting « one-click placing » with Properties window visible
  • Added a button to remove material from polygons
  • Implemented the Delete Key as a way to delete individual points on polygons-based objects (painted lines, apron, polygons…)


  • The Initial Zoom value in the Camera tab is now capped to 20


  • Fixed execute_calculator_code proxy and added more security to it




  • The cockpit screens can end up in an unresponsive state if the RTC finishes and proceed into flight. Please make sure to click the Fly Now button before the RTC ends. (RTC = Real-Time Cinematic)

  • ADDED: WASM stand alone modules used in some add-ons are no longer working

============== End of 14/2021 World Update 4 RELEASE NOTES ====

05/25/2021 SIM Update #4.

We performed some optimization for the initial full download of the title so the base game is only 83GB instead of +170GB


  • New AIRAC cycle 2105 has been implemented
  • FAA data has been implemented to our navdata solution
  • Departure gates are now saved in flight plan (.PLN) files
  • Fixed a crash and other issues when selecting a parking space as arrival and no set departure
  • Fixed some Live Air Traffic aircraft using the wrong model
  • Fixed an issue where some Live Air Traffic aircraft had broken callsigns
  • Increased the density of Live Air Traffic
  • Aircraft that are not on the ground but that have an altitude of zero will now appear at a default altitude of 5000m
  • Live traffic stability has been improved ATC phraseology improvements to FAA standards (wording only)


  • Reduced weather data bandwidth
  • Improved precision of live snow coverage
  • “Visual Effect Only” in assistance now does properly deactivate other weather effects
  • “Visual Icing” has been renamed “Icing” in the devmode because it impacts the whole icing system
  • “Icing” in DevMode only changes visual effects if “Visual Effect Only” is activated
  • Ice constant decay is no longer ignored outside of frost conditions
  • Accelerated pitot icing model while making it slower to defrost
  • Fixed pitot icing not scaling with the number of instruments
  • Fixed overspeed controller vibrations not affected by pitot icing
  • Decrease structural icing rate by a factor of 15 for severe icing (6 for moderate)

** (1) All planes:**

  • Added altitude interception for PITCH HOLD mode
  • Increased native induced drag amount and improved induced drag precision
  • Autopilot no longer flies toward a Waypoint removed from the FlightPlan
  • SimConnect injected traffic (VATSIM, IVAO) should now be displayed in HTML/JS instruments that have traffic displays as well as on the VFR Map
  • Fixed simvar acceleration not taking impacts into account and returning wrong values on ground
  • Writing back corrected acceleration values after impact resolutions so that they are exact when pulled as a simvar
  • Flaps, stall, wing and fuselage updates of flight model
  • More cleanup of the flaps system. Support multi systems with different number of levels and max angles
  • Increased threshold to avoid trim fight against elevator to 50% (corresponds to disconnect threshold)
  • Changed elevator AP with trim to avoid fighting against user input when user input is >50% on elevator
  • Allow setting the empty CG position out of limits
  • Fixed more audio not playing on large aircraft
  • Fixed Autothrottle sometimes disabled by AI

(2) Turboprop:

  • Improved tools to tune prop drag on constant speed & turbo propellers
  • Removed fake and completely wrong ITT simulation when prop is feathered or reverse
  • Fixed reverse thrust problem with propeller (no support of negative beta & induced wind)
  • Added prop lever debug on engines debug page
  • Fixed torque increasing with altitude because of N1 / Corrected N1 confusion in FSX turboprop code
  • Fixed crash bug when scrolling Daher TBM 9300 Flight Plan pag
  • Torque fine adjustment per POH for the Daher TBM 930
  • Updated stability and inertia for the Daher TBM 930
  • Adjusted sea level max torque on the Daher TBM 930
  • Turbine fine tuning: ITT, Torque, Performance, and Fuel Flow on the Daher TBM 930
  • Flight model update for handling on the Daher TBM 930
  • Ground level max torque and torque limiter setting updated. 100% max with inertial separator; 112% max, limited to 109% without inertial separator on the Daher TBM 930
  • Reduced effect of inertial separator from 25% TQ to 12% TQ for the Daher TBM 930
  • Tuned stability and inertia on the Beechcraft King Air 350i
  • Tweaked Idle RPM from 1030 to 1060RPM for the Beechcraft King Air 350i
  • Adjusted max sea level torque on the Beechcraft King Air 350i
  • Tuned Beechcraft King Air 350i turboprop engine: ITT, Torque, Fuel Flow and other minor changes
  • Added ITT debug to engine debug and added density on fuel flow table for turboprop engines on the Beechcraft King Air 350i
  • Fine tuned fuel consumption per the POH at IDLE, 12000ft cruise and 18000ft cruise on the Cessna 208 B Grand Caravan EX
  • Fixed ITT, Throttle to Torque Ratio, and Garmin color bands for ITT and TRQ on the Cessna 208 B Grand Caravan EX
  • Pass on stability and inertia on the Cessna 208 B Grand Caravan EX
  • Fine tuned Fuel Flow per altitude and ajusted sea level max torque on the Cessna 208 B Turbine Torque fine tuned per POH on the Cessna 208 B Grand Caravan EX
  • Control surfaces & handling improvements on the Cessna 208 B Grand Caravan EX
  • Prop lever of the Cessna 208 B Grand Caravan EX can now be set in feathering range

(3) Others:

  • Weather radar now displays precipitation instead of cloud coverage
  • Fixed contrail behavior on player’s aircraft during windy conditions
  • Contrails are now displayed for applicable AI traffic planes
  • Reduced rudder authority based on the Cessna 152
  • Stability and inertia pass on Cessna 172 Skyhawk and Cessna 152
  • Flight model handling update for the Cessna 152
  • Fixed Cessna 152’s rear wheels not touching ground
  • Pass on engine power & propeller drag. Fine tuned max speed, cruise speed, climb speeds, glide speeds and other minor tweaks on the Cessna 172 Skyhawk
  • Flight model tuning of Cessna 172 Skyhawk (handling, induced yaw, roll and stall)
  • Fixed water on windows and tail color on LOD5 for the Boeing 787-10 Dreamliner
  • EICAS now displays “CLB” instead of “CL” when the thrust levers are set to CL in the A320
  • Fixed an issue which prevented copilot from autocompleting the Securing Aircraft page on the Diamond DA40 TDI
  • Improved propeller drag and engine drag tuning for the Diamond DA62
  • Flight model handling update on the Diamond DA62. Made engine effect more important by adjusting rudder surfaces
  • Increased rudder stability slightly and fixed engine stall in air at low speeds on the EXTRA 330LT
  • Added a notch more dihedral to increase induced roll a little on the EXTRA 330LT
  • Fuel Pressure gauges now display correct levels of pressure on the EXTRA 330LT
  • Fine tune on the 103Solo Engine and implementation of engine clutch below 2100 RPM
  • Fixed FS Livery on Cessna Citation Longitude disappearing too early on LOD6
  • Corrected Pipistrel Virus SW121 flaps animation which would not properly play for negative flaps values
  • G3000 : Map zoom level is now kept constant between Regular and Weather map
  • G1000 : Airspaces are redrawn uppon change in map orientation
  • G3000 : Fix PFD display error when a DirectTo is requested
  • Fixed aircraft spawning with glasscockpits turned off randomly
  • Fixed FlightPlan displaying passed waypoints when canceling a DirectTo
  • Fixed FlightPlan guidance not re-engaging properly when DirectTo is canceled or reached
  • Fixed G3000 and G3X MFD TopBar displaying True Bearing instead of Magnetic
  • Fixed overspeed strip being too low on airspeed tape
  • Fixed bug where the flightplan was not displayed properly if the flight was started directly on approach
  • Fixed VFRMap not updating approach according to FlightPlan
  • Tactile glasscockpits scrollbars are bigger and can be interacted with more easily
  • Fixed FlightPlan guidance not re-engaging properly when DirectTo is canceled or reached


  • Fixed resetting position peripheral input position when user exits the pause menu
  • Fixed the unresponsive specific axis on Honeycomb Bravo Throttle
  • Fixed default mapping for the CH Eclipse Yoke
  • Fixed default mapping for the CH Fighter Stick
  • Fixed default mapping for the CH Flight Sim Yoke
  • Fixed default mapping for the CH Fighter Stick Pro
  • Fixed default mapping for the CH Pro Pedals
  • Fixed default mapping for the CH Pro Throttle
  • Fixed default mapping for the CH Throttle Quadrant


  • Community Folder Addons will now show up as Installed in the Content manager

(1) General:

  • Coherent GT’s debugger is now included in the SDK
  • Speed restrictions and RF center fix information is now available on airport facility procedure data via the JS facility listener
  • JS facility listener LOAD_* calls now return bool to indicate whether or not an ICAO can be loaded
  • Facilities.getMagVar added when JS facility listener is loaded which allows one to get the mag var for a given LatLongAlt
  • Maximum number of JS BingMap views increased from 5 to 9
  • Ability to intercept and mask key events has been added to the JS key event listene
  • Preventing the game from crashing if too many virtual netbing maps were created
  • Fixed the installation of 3DS Max tools
  • Fixed the font displayed in the release notes window


  • Creation of an Xbox X|S dedicated page in the documentation, which gathers the latest info & best practices to port content on Xbox.
  • Visual Effects documentation has been added along with a sample. A video tutorial will be added soon.
  • Major updates were made to The Project Editor section:
  • Updated main page with more information
  • New section for Project Asset Types (WIP)
  • New section for the various project editor menus: Project, Edit, View
  • Updated Marketplace Data page
  • Updated Export Window page
  • Content Configuration now has a section dedicated to Flights And Missions:
  • Initial documentation for Flight Plan Definitions
  • Initial documentation for Flight Definitions
  • Initial documentation for Event Trigger Definitions
  • Initial documentation for Weather Definitions
  • A page has been added documenting the new SimObject Stats window.
  • A page with samples to illustrate model optimisation has been added specifically for the Xbox, although the samples shown are relevant to everyone creating add-ons.
  • A page has been added for Submodel Merging in the 3D Models section.
  • The Airport Tutorial has been updated to show the Airport Wizard for Creating Or Replacing An Airport
  • Page on Aircraft Texture Mapping now has a section describing how to set up Ice
  • Page on the Package Tool XML Definitions has been updated with more information.
  • Page on the DA62 sample added to the Samples And Tutorials section
  • New engines.cfg and flight_model.cfg setting documented

Project Editor:

  • Renamed package inspector “+” button into “Add asset group”
  • In the Marketplace Data Editor, fixed a crash when loading empty thumbnail
  • Fixed simvar index being lost when loading a file
  • Disabled a false positive error message box that appeared randomly when building aircraft packages

Scenery Editor:

  • Fixed a crash when editing runway terraforming profile
  • Fixed ‘`’ char being filtered in taxiway sign content text entry.
  • Fixed the “add custom asset group” window which wouldn’t close when creating a new non-templated asset group
  • Fixed a crash when editing runway terraforming profile
  • Fixed the windsocks with wrong orientation
  • Fixed infinite loading for light presets with no mesh
  • Fixed issues with water polygons

Aircraft Editor:

  • Fixed a potential crash when converting old .air file.

Visual Effects Editor:

  • The Visual Effects Editor is now available! You can now create your own effects. We prepared a video tutorial and complete documentation that can be found at http://docs.flightsimulator.com 137 !

Flight Model:

  • Added elevator_lift_coef, rudder_lift_coef and fuselage_lateral_cx to give aircraft creators better control over plane stability


  • Added new SimVar “GEAR SKIDDING FACTOR”


  • On Wwise Sample Project: Fixed shared IR convolution medias not loaded in remote
  • On Wwise Sample Project: Added Built-in Emitter & Listener cone game-parameters


  • You may crash when exiting VR mode. This issue is being investigated but we suspect OpenXR preview runtime (v106) may be involved. So if you experience this problem, we recommend you revert to the official public runtime (v105).

=============== . . End of — 05/25/2021 SIM Update #4 . . =======

Last Edited : 05/25/2021

Closed at OP’s request