Sim Update 7.1 Available Now

23

October

2026

Release Notes: Sim Update 7.1 [1.9.21.0] Now Available

Posted by: Microsoft Flight Simulator Team

RELEASE NOTES Sim Update 7.1 – 1.9.21.0

If you are playing on PC, outdated packages in your Community Folder may have an unexpected impact on the title’s performance and behavior. 

If you suffer from stability issues or long loading times, move your Community package(s) to another folder before relaunching the title.

New Content and Features

  • In the NCAR game mode, time trial is now playable.

General Bug Fixes

  • Fixed a situation where players could enter a Roswell Jet race with a Jet Mach track.
  • Fixed preset not switching to Custom when modifying Authorized Planes.
  • Fixed a flight model issue that was causing a decrease of drag.
  • Fixed an issue that lead to an empty Marketplace page when selecting a Marketplace touch point from NCAR game mode.
  • Fixed a pop-up in NCAR game mode that was not responsive to controller navigation.
  • Fixed an issue where the lobby list in the NCAR game mode could immediately get refreshed when scrolling to the bottom, making it appear that there were no more lobbies to display.

SDK

General

  • Package Validator: Profiling results flag now comes from ingestion pipeline only
  • PackageValidator: Fix wrong condition for profiling results

SimVars

  • Fixed the “ELECTRICAL BATTERY LOAD” SimVar reporting a load even when battery is charging.

Exporter Blender

  • Fix super long export time when material.use_node is True.

Documentation

  • Scenery Editor: Boolean operators added to apron RMB menu when two aprons selected.
  • SimAttachments: New included sim attachments added (CIVA, RDR, and UNS).
  • Updates to Samples section to fix links and formatting.
  • Engines.cfg:
    • New parameters added to the [ANTIDETONATION_SYSTEM] section mp_on_CHT_cooling, mp_on_radiator_cooling.]
    • New section added: [Spraybar System.N]
  • New RPN function PackageVersionadded.
  • SimObject Editor:
    • New feature that permits section and parameter renaming has been added.
    • Updated SimObject Editor CFG pages to explain using localised text in “name” inputs
    • LOC Files: update to explain using the “@” identifier in LOC strings
    • flightmodel.cfg: New version number (1) added to the NormalisationMethod parameter description.
    • Blender plugin version information updated.
  • systems.cfg: Pneumatics System version 3 added.
  • Further model behaviour updates to improve information related to and .
  • cockpit.cfg: the [MANIFOLD_PRESSURE] section has been updated with new colour parameters.
  • Fixed broken link on DevMode Debug Menu page.
  • Engines.cfg:
    • Update to the prop_rpm_limiter_ff_governor_active_below_throttle_pos parameter description.
    • New mp_on_cht_table parameter added.
    • New radiator_temp_factor_from_rpm added.
  • Blender: Update to export docs with new “hierarchy” tab information.
  • Updates to the new WASM callback functions to specify that they disable the legacy versions, as well as improved information on what signature each callback should use.
  • New JS listener JS_LISTENER_PROFILE_CUT added.
  • JS_LISTENER_MAPS updated.
  • FLT Files: new parameter added ElevatorTrimAngleadded.
  • Description for ElevatorTrimupdated.
  • SimVars: Added the following SimVars – MASTER CAUTION ACTIVE, MASTER CAUTION ACKNOWLEDGED, MASTER WARNING ACTIVE, MASTER WARNING ACKNOWLEDGED
  • Fix to the checkpoint XML page <Page>, <Block>, and <Checkpoint> elements to clarify the Index attribute information.
  • Update to the SimConnect_EnumerateInputEventParams page to fix erroneous information.
  • Fixed Typo in loads.lbl weight section.
  • Material Editor: Minor update to specify that the metal channel is not read when suppling Normal Roughness Metal textures.
  • Systems.cfg: Updated the modular hydraulic system examples page to match current aircraft and use cases.
  • Content Configuration: New “Insulation Interactive Point List” feature added to the AcousticParameters in the sound XML page.
  • systems.cfg: new compressor component added to the Pneumatic System page.
  • aircraft.cfg: minor update to the yoke_release_*parameters to clarify their use.
  • Project Editor: References to the INPUT PROFILE content type have been modified to include a disclaimer and Input Profile creation instructions fixed to use the “MISC” content type.
  • SimVars: Update to the APU section of the electrical simvars page to better specify the indices that are used and other information.
  • Update to model-behaviors page to fix wrong elements marked as deprecated.
  • Fixed mismatched “Circuit” header on the electrical system information page.

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