The Cowan Simulation
206B3 Project

206B3 v1.10 – 1/7/2022

If something you requested or reported was not fixed or added then don’t worry. This is an ongoing project and will be updated further. Development takes a LOT of time, but we will get there.


The fmod sounds got a huge makeover. Things should be more in tune now and outside is different from inside. My mistake for messing this up at the very last minute before release. I seemed to have omitted several sounds and completely messed up the levels for inside, outside, opening doors and the window. Several new sounds were added and lots was tweaked. Thanks to you who reported it to me.

Throttle, Idle Release & Governor

All of these got a HUGE makeover. All brand new coding and works like the real machine. We are still using “wing sweep” for mapping hardware for the “throttle”. The idle release will stay above idle until you click the idle release button. The button was backwards and that is fixed as well. It pops OUT when rolling past the detent and pushes IN when you unlock for rolling down to cut off. The RPM inc/dec switch works smoothly now. The governor coding is what made this release late. This is a big step up from what we are used to and took me how many years to figure out. Hope you all like it.

Paint Kit

The paint kit is the same but the Photoshop files were updated to match the GIMP files. There were some parts missing.


Thanks to Dark Angel we have tons of new liveries and some pretty amazing ones as well. With his hard work we now are up to 60 paint jobs!!! Thank You Sir!

Pilot Hide

The option to hide the pilot at all times is now available.


The HSI is working as intended now. The deviation bar was not moving its full range and was indicating the wrong direction.

Vibrations and Head Force

Custom vibrations and head force are now available from the config menu. When rolling and pitching then the camera will move so you don’t have to always look around. Kind of like RXP and it’s compatible with RXP as well. You will get some decent vibration when rolling through the yellow resonance band you see on the RPM gauge. None of this works in VR of course, since you are in control of your own head.

Tail Rotor

The tail rotor was spinning the wrong direction on start-ups and shutdowns at a low RPM. This is an issue with X-Plane I believe. So now it spins the correct way and when RPM increases then the wrong way for a few seconds and then back the correct way. You don’t notice it because it’s spinning fast but I thought I would mention it.

REG Numbers

The correct REG numbers are now on the panel for each livery. The paint kit also includes a texture just for this. Just stick it into the livery objects folder.


Most of the SASL code was optimized and organized and now uses 0 FPS to run. The objects are organized and optimized as well. Not one double sided object exists and ordering is correct.


The torque gauge is calibrated and you can hear the change in pitch when torque changes.

Auto rotations were tweaked
Some small bug fixes and many other small details.

Extensive work went into getting smells right. Some people were having issues with smells per second but that is sorted out. Now you can smell the Jet A1 fuel burning along with human cabin smells (not sure why that was requested) and more… okay I will stop now. HAHAHH!

This is what I could get done in 7 days everyone. If I missed something you wanted or requested then I’m sorry. I have a huge list and I will get to you all in time. I wanted to get the important stuff out of the way and I still have work to do on the 500E and 222 updates. I will keep pushing forward and I hope you enjoy my work.


Joshua Cowan


206B4 v1.00 – Initial Release 12/24/2021

This is an ongoing project and will be updated.