For many of our long-time customers, Accu-Sim needs no introduction. It has powered A2A aircraft for well over a decade, and during that time we’ve learned an enormous amount about what makes an aircraft feel truly alive. That experience led us to build Accu-Sim 2.0: a complete rethinking of how we simulate airplanes, created from a clean slate with modern platforms in mind.
The Native MSFS2024 Accu-Sim Comanche 250 represents the continued evolution of that technology. Fully rebuilt for MSFS2024, this version integrates native platform features while retaining the core philosophy that has always defined Accu-Sim: simulate the aircraft as a living system, not a collection of scripted behaviours.
At the heart of Accu-Sim 2.0 is a custom aerodynamics and systems model that allows us to simulate how an aircraft actually flies through the air how it responds to control inputs, loading, environment, and pilot technique. It’s a level of depth that goes beyond chasing numbers and checkboxes, focusing instead on behaviour, feel, and cause-and-effect. This approach continues to shape every Accu-Sim aircraft we build today.
The Comanche 250 was a natural choice for Accu-Sim 2.0. It’s an aircraft I’ve owned and operated for many years, and one I know intimately. That real-world experience allowed us to explore questions that don’t always have neat textbook answers and to test scenarios that simply aren’t possible without direct access to the aircraft. The result is a simulation shaped by ownership, experience, and flight testing, not assumptions.
This native MSFS2024 edition builds on that foundation, bringing modern platform features such as native walk-around support, persistent wear and dirt, updated avionics options, and improved model handling, while preserving the depth and character that made the Comanche so special in the first place.
Accu-Sim has always been about understanding why an aircraft behaves the way it does. With the Native MSFS2024 Accu-Sim Comanche 250, that philosophy continues, refined, expanded, and ready for the next generation of flight simulation.
Scott Gentile (President, A2A Simulations Inc.)
Features
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Brand-new Accu-Sim 2.0 “Merlin” external aerodynamics engine, developed from a clean slate
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Performance accuracy based on many years of operating A2A’s own Comanche 250 (N6229P)
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Exceptional aircraft feel, handling, and trim behaviour driven by extensive real-world flight testing
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Full physics-based per-cylinder simulation of the Lycoming O-540-A engine
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Advanced engine starter simulation that physically turns the engine through compression cycles
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Authentic fuel system modelling fuel lines, primer, strainers, and contamination
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Custom oil system with dynamic viscosity, degradation, and colour changes over time
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Detailed JPI EDM-830 engine monitor with authentic displays and leaning procedures
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Graphical tablet-based engine analyser providing deep insight into piston engine operation
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Dynamic ground physics with true weight-on-wheels modelling and tyre side-loading
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Realistic response to different runway and surface types
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Advanced turbulence response and subtle wing flex based on airflow, bumps, and fuel load
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Sophisticated airframe vibration physics with unique ground roll and engine-driven effects
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Physics-driven sound environment with hundreds of dynamic sound effects
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Fully native MSFS2024 model and gauges with optimised LODs
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Native MSFS2024 EFB integration, allowing the tablet to display charts and supported EFB apps
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Full MSFS2024 walkaround system with many interactive and inspectable components
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Persistent exterior dirt accumulation between flights
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Beautifully rendered exterior and interior with subtle wear effects and advanced animations
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Dynamic aircraft registration decals
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Custom-coded Narco avionics stack, including COM/NAV, DME, transponder, audio panel, and ADF
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Narco NS-800 RNAV configuration for classic, non-GPS RNAV flying
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Century NSD-360A HSI with custom needle-smoothing physics
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Advanced simulation of the S-TEC System 30 two-axis autopilot
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Optional STEC ST-901 GPSS module for GPS-coupled autopilot operation
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Flexible GPS integration options: MSFS / Working Title GNS 430W & 530W, PMS GTN 750/650, and TDS GTNxi 750/650
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Optional Asobo G5 electronic instrument retrofit
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Fully customisable persistent aircraft with adjustable wear and failure simulation
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Pilot’s tablet for intuitive aircraft configuration and management
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Real-time load manager with dynamic weight and balance indication
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Electrical system analyser with functional circuit breakers
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Two naturally animated rear-seat passengers and support for native MSFS avatars in the front seats
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Support for time compression and other quality-of-life improvements
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Fluid in-sim performance comparable to default aircraft of the same class