CSS News - November 21, 2025 - You asked, and we listened

CSS News - November 21, 2025

Welcome to another edition of our news blog. We’ve been quiet for a while, and not without good reason - with this post we will be addressing several key community feedback points we’ve received since release. Buckle in, as this is our largest news post yet!

CSS Launcher Redesign

Over the past couple of months we have been carefully crafting a new visually appealing, intuitive and easy to use design for the CSS Launcher, and we’re pleased to say that it is currently in the final testing phase and will soon become available via an automatic update to all of our users. We hope this new design will make your CSS experience more pleasant and convenient!

Time to deliver what we promised

Ever since the initial 737-500 release, many users have been eagerly asking for the rest of the 737 Classic lineup. After months of silence, it is finally time to reveal that this is exactly what we’ve been working on behind the scenes. The CSS 737-300 and -400 passenger and freighter versions will be joining the 737 Classic lineup very shortly.

In addition, a significant amount of time and resources was spent on rebuilding our project entirely to make it in line with the proper MSFS 2024 infrastructure. In the short term, this means that the next update will feature a stable, native MSFS 2024 version for you to enjoy, while in the long term it will allow us to take full advantage of the features MSFS 2024 has to offer for the CSS 737 Classic V2.

As promised, all of the new CSS 737 Classic variants will be available at no additional cost to all of our customers for both MSFS 2020 and 2024.

Sales & Pricing Policies revamp

A lot of community feedback has been directed at our subscription-based sales model, with many users wishing for variant-specific purchase options. As such, they’ll be pleased to hear that we have revamped our sales policy to include the following variants:

-The current monthly, yearly and permanent license options will remain available and grant you access to all CSS 737 Classic variants.
-The 737-300, 737-400 and 737-500 passenger versions will be available as standalone, permanent purchases priced at $45 each.
-The 737-300 and 737-400 freighters will be available as add-ons to their respective passenger versions for $10 each.
-The monthly and yearly subscription options will ONLY be available for purchase via the CSS Launcher.
-If you have an active subscription, the standalone variants will not be available for purchase until your subscription expires.
-If you purchase a standalone variant, you will no longer be able to purchase the subscriptions or the $120 full permanent license.

These changes will take effect with the release of the new 737 Classic variants.
We hope these new options will be flexible enough for everyone to enjoy our products however they like!

Now let’s go into a bit more detail on the new 737 Classic variants.

The CSS 737-300

The 737-300 is the most popular 737 Classic variant, with over 1000 built from 1984 to 1999. It is fitted with either 20K, 22K or 23K CFM56-3 engines, with winglets becoming a retrofit option in the early 2000’s. For the 737-300SF, we’ve chosen the PEMCO conversion. We’ll share some more previews of it in the near future.

We have modeled all 3 engine ratings, which are defined by the livery in its aircraft.cfg file. The exterior model has also seen various fixes and improvements which have subsequently been translated back to the 737-500 exterior model.

The CSS 737-300 comes with 16 liveries at launch, all with their appropriate engine ratings:

We hope you enjoy your flights with the CSS 737-300 and we can’t wait to see it in action!

The CSS 737-400

The 737-400 is the longest member of the Classic family, built from 1985 to 2000. It is powered by either 22K or 23K CFM56-3 engines and is the only Classic variant to have never received winglets. For the 737-400SF, we have modeled the AEI conversion.

As is the case with the -300, we have modeled both the 22K and 23K engine variants, which will be livery-specific.

The CSS 737-400 comes with 18 liveries at launch:

CSS 737-500 Fixes & Improvements

As mentioned above, working on the 737-300 model has allowed us to make some improvements which found their way back into the 737-500.

The 737-500 now has a separate Winglet flight model, so Winglets have been made livery-specific (customizable via aircraft.cfg) and can no longer be toggled via the EFB. Additionally, like the -300, the -500 now has livery-specific engine ratings (18K and 20K).

Exterior model improvements:

-Fixed cargo door handle animations
-Removed gaps between exterior model and cabin walls
-Fixed right engine and cargo door rivets
-Fixed small white artifacts appearing in cockpit in external view
-Removed distortion from engine stickers
-Fixed aileron normal maps

Interior model improvements:

-Added low-poly nose gear shadow model
-Improved REG/SELCAL plate texture
-Fixed flickering decal at row 23
-Cabin seat headrests are no longer mirrored
-Added material to interior side of cabin doors

Massive Systems Update

Coinciding with the lineup expansion, we’re rolling out a substantial update for the 737 Classic systems with lots of fixes and improvements.

System changes and improvements:

-Aircraft performance table aligned with actual registration and engine rating
-Added 20K, 22K and 23K engine data for their respective variants
-Added seating configurations for new aircraft variants
-Added new stab trim sounds
-Added new ground roll sounds
-Added Go Around modes
-Added VNAV approach flap setting target speeds
-Introduced delay to DIR TO turns
-Offset modified EHSI path push until path is complete
-Fixed incorrect stab trim movement with AP engaged
-Fixed missing ADF bearings on EHSI
-Improved glareshield shake effect
-Fixed CTR getting hidden behind two altitude restrictions on LEGS page
-Fixed CLB N1 not matching FMC
-Fixed DIR TO causing an unreasonable turn
-Fixed PPOS waypoint appearing on EHSI after DIR TO
-Fixed RESET MCP ALTITUDE message appearing when it shouldn’t
-Fixed stab trim moving when switching views
-Improved VNAV descent deceleration
-Fixed SID not clearing when changing departure airport in FMC
-Fixed POS INIT coordinates after recycling IRS
-Improved Autoland
-Improved Flaps lift & drag
-Adjusted Stall Warning Computer speeds
-Fixed green dot speed displaying above FL200
-Fixed autobrake disarming using toe brakes
-Fixed speedbrake handle animation in VC
-Fixed aircraft climbing above FMC cruise altitude
-Fixed LEGS page not displaying Mach numbers
-Fixed VNAV SPD climb target not matching FMC
-Fixed MCP Mach displaying 0.60 when switching from VNAV
-Fixed MCP SPD mode not engaging with VS
-Fixed being able to select MCP SPD with LVL CHG
-Fixed MCP modes not deselecting
-Fixed ADF receivers not detecting signal
-Fixed RDMI ADF arrows not displaying bearings
-Fixed RDMI DME indicators showing 0 instead of dashes in ADF mode
-Fixed RDMI fail flags logic
-Fixed EHSI ADF pointers displaying VOR bearing instead of ADF
-Fixed EHSI VOR/APP mode not displaying CDI
-Fixed EHSI VOR/APP mode showing VNAV deviation instead of glideslope deviation
-Fixed MCP VOR/LOC mode not working for VOR
-Fixed VOR/LOC mode not working FROM VOR
-Fixed EHSI waypoints disappearing too early
-Improved FMC Approach phase
-Improved EADI VMO/MMO barber pole movement with configuration changes
-Fixed flap setting being copied into scratchpad when selecting VREF
-Improved autopilot turn tracking
-Fixed LVL CHG using VNAV target altitude if engaged after VNAV
-Adjusted flight spoilers drag
-Fixed EFB Weather app filling both alternates in Alternate field if SimBrief computes 2 alternates
-Increased EFB pushback speed
-Fixed EFB pushback allowing selection of multiple directions at the same time

The CSS 737 Classic V2

We’re happy to say that progress on the 737 Classic V2 is continuing at a steady pace. As we have said before, it will feature an entirely new model built from the ground up using photogrammetry and taking full advantage of the new features introduced in MSFS 2024. Stay tuned for some previews in future blog posts!

We hope you’re as excited to try this update as we were when making it for you. We will continue to improve and build upon the CSS 737 every day, and we can’t wait to share more progress and updates with you!