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Mission Statement 

The purpose of FLAPS-2-APPROACH is two-fold:  To document the construction of a Boeing 737 flight simulator, and to act as a platform to share aviation-related articles pertaining to the Boeing 737; thereby, providing a source of inspiration and reference to like-minded individuals.

I am not a professional journalist.  Writing for a cross section of readers from differing cultures and languages with varying degrees of technical ability, can at times be challenging. I hope there are not too many spelling and grammatical mistakes.


Note:   I have NO affiliation with ANY manufacturer or reseller.  All reviews and content are 'frank and fearless' - I tell it as I see it.  Do not complain if you do not like what you read.

I use the words 'modules & panels' and 'CDU & FMC' interchangeably.  The definition of the acronym 'OEM' is Original Equipment Manufacturer (aka real aicraft part).


All funds are used to offset the cost of server and website hosting (Thank You...)

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If you see any errors or omissions, please contact me to correct the information. 

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How to Update and Troubleshoot Problems with the ProSim737 Avionics Suite

The backbone of the simulator is the avionics suite, and for the simulator to run effectively this software must be reliable, feature rich, and robust. 

There are several avionics suites available to simulate the avionics and functionality of the Boeing 737; Project Magenta, Sim Avionics, and ProSim-AR being the most popular.  I have not mentioned Precision Manuals Development Group (PMDG), as PMDG is marketed as a desktop simulation not used widely in a hardwired simulation.

Many virtual flyers assume, that when they purchase an avionics suite, the software will replicate all the aircraft systems, be compatible with their computer and simulator hardware, and probably not need to be updated. Unfortunately, this is rarely the case.

In this article, I will discuss the use of the User Interface and Version Manager which forms part of ProSim737 avionics suite.  These two tools are used to update the software, and to enable first-line troubleshooting.  Additionally. I will share with you several ‘tried and tested’ methods to resolve update problems.  The last part of the article will address recommendations for basic troubleshooting. 

The Reason and Need for Updates

Technology is rarely static, and developers if they are to encapsulate new technology must provide updates to their products.  This evolution can be likened to a game of ‘leap frog’; as something new is released, developers ‘tweak’ their software to take into account new technology while (hopefully) still maintaining compatibility with legacy systems.   

Another reason for updates is that there is not an avionics suite that completely encapsulates 100% of all systems (and functionality) used in the B737.  A possible close exception is PMDG, but as mentioned earlier, this is a desktop simulation (I am not including Level D/Type 7 simulators).

Each company that produces an avionics suite has a specific method to how its software is installed, maintained, and lastly kept up-to-date with improvements, fixes and software upgrades.  For example, Sim Avionics beta test changes and improvements themselves (or to a select group of individuals) and then release a version update.  This is in contrast to ProSim-AR, who release a beta for client appraisal.  Then, after bugs and shortcomings are rectified, release a final release.

ProSim-AR - frequent updates

The avionics suite developed by ProSim-AR for the Boeing 737 Next Generation is feature rich, easy to install and run, and the software is for the most part very robust.   The company ‘appears’ to be committed to ensuring that their software operates across a wide range of computer hardware, and interfaces with as many mainstream hardware components as possible (for example, CP Flight, SimWorld, Open Cockpits, Flight Deck Solutions, etc.).  In my opinion, the company is very proactive in interfacing with new technology to gain the maximum benefit that new technology brings, which includes increased market share and profitability (for ProSim-AR).

With this in mind, ProSim-AR release updates to their software on a very frequent basis.  

Understanding the Basics of the ProSim737 File Structure

It is important to understand the basics to how the ProSim737 file structure is set out, as this will provide guidance to the best way to install an update, and if a problem occurs, troubleshoot.

The ProSim737 suite contains the following modules, located in a folder of the same name.  

(i)      ProSim737 (main system module);
(ii)     ProSim-CDU;
(iii)    ProSim Audio;
(iv)    ProSim Display;
(v)     ProSim MCP;
(vi)    ProSim Panel; and,
(vii)   ProSim737 Hardware Connector;

The folders can be installed to either a server (the computer that has flight simulator installed) or any number of clients (computers networked to the server computer).  Additionally, duplicate instances of the same module, with the exception of the main system and MCP module, can be installed.  

The ProSim737 folder and MCP folder must be installed to the server computer for optimal performance.  The other folders can be installed to the server or client computer, either as single or duplicate instances.

The ProSim737 folder contains the main system module and this is the module that interfaces with all other modules.

The folders can be installed anywhere on the computer, however, it’s not recommended to place them in the same folder (ROOT folder) that flight simulator is installed.

Important ProSim737 Files

Each ProSim737 folder contains a configuration (config) file.  The configuration file contains information pertaining to screen position, functionality, IP address, etc.  The most important configuration file is located in the main ProSim737 folder.  This file, amougst the things, holds the information that relates to specific hardware, functionality and button assignments.  All configuration files are named config.xml.

Other important files, located in the main ProSim737 folder, are the:

(i)     Companyroutes.xml;
(ii)    ConfigMCP.xml;
(iii)   TransitionAltitudes.xml; and,
(iv)   Cockpitsetup.xml.

The configuration files are important.  These files should be regularly backed up.

Other files that relate to the update process are the updatelog.txt and changelog.txt. The updatelog.txt contains information concerning to the latest update, while the changelog.txt provides a list of changes that has occurred in the various ProSim737 releases.   

Important Point:

  • The most important configuration file is the config.xml file located in the main ProSim737 folder.  This file contains all information that relates to configuration, customization, and hardware.  It should be regularly backed up.

User Interface and Version Manager

The User Interface enables you to customise the avionics suite, configure hardware components, update, and troubleshoot problems.

LEFT:  ProSim737 User Interface (upper image) and Version Manager showing the release notes for a beta release.  The User Interface enables considerable customisation and includes features to customise updates, configure the simulator, check connectivity, and troubleshoot problems (click to enlarge).

The interface is straightforward to use and I urge you to become familiar with its tab /page layout and content.  I will discuss some of the troubleshooting features of the interface later in this article.

Included in the interface is a Version Manager that can be used to update the avionics suite.  When connected to the Internet, the Version Manager compares the release date of the currently installed avionics suite to the latest available release. 

The Version Manager enables the avionics suite to be updated from within ProSim737.  It's accessible from the User Interface (help/updates).

The Version Manager has three tabs:  Releases, Add-ons and Pre-releases.

Releases tab will display a list of final ProSim737 releases (along with release information and the date it was available).  To install the latest release, or to roll back to an earlier release, you select the install link in the Actions title.  This will cause the selected release to download and be installed to your computer overrighting (and updating) any previous release installed.

Add-ons tab displays various add-ons that ProSim-AR have made available.  An example being the ProSim737 aircraft flight model.

Pre-release tab will display a list of beta releases.  Operation is identical to the releases tab discussed above.

One of the advantages of the Version Manager is that it enables you to quickly update the avionics suite to a beta pre-release, final release, or roll backwards to an earlier release.  It also provides information concerning the beta release (Release Notes tab), in addition to enabling you to monitor respective updates to the 737-flight model (Add-ons tab).

Three methods can be used to update the ProSim737 avionics suite:

(i)     Download the latest release from the ProSim-AR website (standalone requiring installation);
(ii)    Download the latest release from the Version Manager (zip file); or
(iii)   Download and install from the Version Manager a beta pre-release or final release.

There is no preferred method, however, option (iii) is the easiest way.

Beta Pre-release or Final Release ?

ProSim-AR regularly adds functionality and improvements to their avionics suite via beta pre-releases.  A beta pre-release enables users to test their hardware set-up with a release prior to it being finalised.  As such, beta pre-releases often have bugs, shortfalls and other problems associated with them. 

ProSim-AR have a dedicated web-based forum, and request that beta users provide feedback on a pre-release.  This enables issues to be rectified prior to making available a final release via the Version Manager.

The Updating Process

The ProSim737 Version Manager (if used) is smart enough to replace all files within the ProSim737 folder system, with the exception of configuration files and any file ending in .xml (these files are kept intact). 

However, if a release is downloaded from the ProSim-AR website, or the ZIP file option is used, then it will be necessary to manually insert the configuration files to their respective folders.  

ProSim737 updates in sequence.  This means, that after the software has been downloaded, the main ProSim737 module will be installed and run  first.  Then as each .exe file for each additional module is run, that module will update. 

A pop-up box will display 'updating configuration' as each module updates its content and synchronises with the main ProSim737 folder.  When an update to a module has been completed, the software will generate the updatelog.txt file (as discussed earlier). 

The time taken to update across a network between server and client computers depends upon your network speed; usually less than 30 seconds.  

LEFT:  The User Interface showing the Database window.  In this window the Scenery Database can be checked and rebuilt.  The window also indicates what version of Navigraph is being used, and the status of the terrain data (click to enlarge).

Although theoretically not required, the Scenery Database (config/database) should be checked to ensure it's path is connected to the correct folder in Flight Simulator.  It also doesn't hurt to rebuild the database.  Rebuilding the Database following an update ensures that the link between the database, ProSim737 and Flight Simulator has not been corrupted.

Important Point:

  • Configuration files are generated in each folder as the .exe for each module is opened (run).

Customising How ProSim737 Updates

There are three ways that the User Interface can be set-up to update the avionics suite:

(i)     Manual updating;
(ii)    Ask before updating; and,
(iii)   Automatic updating.

The method is customised in the User Interface, accessible from the drop down box (config/configuration/updates).  The interface also has a box that an be checked/ticked if you want the interface to monitor when a beta release becomes available; a screen pop-up will be displayed when you open the avionics suite.

Backups and Install from Backup

I recommend keeping a complete copy of each ProSim737 folder from the server and client computer.  By backing up the complete folder, you are  also backing up the configuration and other important .xml files.

Theoretically, the Version Manager negates the necessity to maintain a backup of ProSim737 (or the configuration file), as the configuration and other .xml files are maintained intact.  However, by keeping a complete copy of the last ‘working’ release, it’s easy to ‘change out’ between releases (roll back or forward).  

All you need to do is delete the ProSim737 folders from the computer, and then copy/paste the earlier folders to the same locations.  All the files are intact and ProSim737 will load whatever release has been installed.

If you don't want to keep a complete copy of the folders and files, then it's also straightforward to roll back to an earlier release by using the Version Manager (this downloaded the selected release from the ProSim-AR server).

Important Points:

  • Always make a backup up your configuration (config.xml) files.
  • If downloading and installing a fresh copy of a release from the ProSim-AR website, then the configuration files will need to be manually added to each folder (from your backed up files).
  • Updates using the Version Manager replace all files within the ProSim737 folder system, with the exception of configuration files and any file ending in .xml.
  • The Version Manager displays the current release of ProSim737 you have installed.
  • A good idea to backup a copy of all the ProSim737 folders on both server and client computers.  Doing so allows you the option to easily replace a ProSim737 release with an earlier release number.
  • After running any update, the ProSim737 Scenery Database should be rebuilt.

Troubleshooting Updates

This section is not the ‘Holy Grail’ to resolve all problems.  Rather, it’s what should be done prior to requesting help from the ProSim-AR Development Group.  Some of the methods used to troubleshoot are quite simple, yet effective.

Occasionally there may be a problem with an update.  The update may cause one of the module’s .exe files to loop continually (open/close/open/close), or there may be limited functionality, or perhaps the ProSim737 main module will continually crash.

Recommended Initial Troubleshooting Protocols

Before spending valuable time in advanced troubleshooting, I suggest you check/do the following:

(i)     Shutdown all computers and restart;

(ii)    Ensure that all modules within all folders on the server and client computers have been updated to the new release (check the update file in the folder or check the release version number by right clicking the screen display and selecting configuration);

(iii)    Close and open all ProSim737 modules on the server and client computers;

(iv)   Check to ensure that the correct IP address is recorded for each display window opened.  To check this, right click the opened screen and select configuration.  This will open the screen’s user interface.  Check that the correct IP address recorded in the server box;

(v)    Check the version of .Net Framework on your client and server computer (discussed later);

(vii)  Replace the configuration file in the main ProSim737 folder with a copy of your backup configuration file;

(viii)  Delete all ProSim737 folders from your server and client computers and download/install from the ProSim-AR website a fresh copy of ProSim737 (remember to replace the configuration files in the ProSim737 folders to maintain your functionality settings and screen position); and,

(ix)     Open the User Interface and confirm that the correct simulator (ie: MSFS) is listed in the options box.  Also ensure the enable embedded MCP beta is not selected, all installed  I/O modules and software are operational, and the simulator is connected (config/configuration).  Furthermore, check that all appropriate drivers have been selected for the add-on components and software you are using (config/configuration/drivers).

Usually problems are resolved by restarting your computer, or reinstalling ProSim737 from a fresh download.  

On rare occasions, the configuration file in the main ProSim737 module may have become corrupted during the update process (jumbled and altered assignments).  If you suspect a problem with the config.xml file, and copy/paste your backup configuration file to the folder.

Often, the easiest and fastest method to alleviate issues and save considerable time is to DELETE all instances of ProSim737 from the server and client computers.  Before doing this make sure you have a backup of any files you may wish to keep (configuration files, etc.). 

Then, download the latest release of ProSim737 from the ProSim-AR website.  Copy the folders to the same location and add a copy of the respective configuration file to each folder.  Then, download the beta release (if required).

Advanced Troubleshooting, Log Files and Input Debugger

If the above-mentioned ideas have failed, or the problem relates to a switch, toggle or USB disconnection of hardware, then the next option is to use some of the features available in the User Interface.  Namely the: System tabs, Driver tab, Input Debugger, Logging features, and Debug Mode. (config/configuration/main tab/drivers tab).  Let's look at each in turn.

Main Tab 

After opening the User Interface, the first tab that is usually seen is the Main tab.  The Main tab displays a list of registered and connected interface cards.  It also displays the add-on software components that are specific to your simulator configuration.  This screen is ‘live’ meaning that as you add or remove a device or interface card from the computer the connection (and list) will be updated.

The main tab is particularly helpful in identiftying hardware USB disconnects (Windows USB disconnect ding-dong sound). 

In the case of USB disconnects, note any interface cards that you have connected that are either not displayed in the list, or flash on and off simultaneously with the ‘ding-dong’ sound; this will mostlikely be the offending card/device.  Often removing and replacing the USB connection will resolve a problem.

LEFT: User Interface showing content in Main tab.  This screen is 'live' and will update automatically when a device is plugged in or out of the computer.  The SimWorld MCP expansion + has been opened showing the various SimWorld components installed (click to enlarge).

If the problem is a connection or functionality problem that relates to an add-on component (for example SimWorld MCP, CP Flight, Flight Deck Solutions, etc.).

Click the + symbol adjacent to the name of the device in the software list. This will expand the selected folder for the item in question.  Components not operating correctly, or not connected will be highlighted in red.

Important Point:

  • The list displayed in the Main tab includes all legacy components (for example, interface cards that previously may have been used but are now not connected).  To reflect the most up-to-date items, the configuration file in main ProSim737 folder must be edited.  This post in the ProSim-AR forum explains how to remove these entries: Removing Old Entries in Config File.

Drivers Tab

One of the advantages in using ProSim-AR, is that the developer has pre-installed and checked the connectivity of drivers for several add-on hardware components.  This removes the need to regularly update drivers.

The Drivers tab displays a list of all drivers that can be used with ProSim737.  For an add-on component to function, the driver specific to that component must be selected (checked/ticked/turned on).  If it isn't then the component will fail. 

If you have updated ProSim737 to a newer release, and have not used the Version Manager (manual update from the website), then there is a possibility that the correct drivers for your components have not been selected.

Functionality - Checking Inputs and Outputs (System tabs and Input Debugger)

There are 2 ways that the User Interface can be used to check whether the movement of a component (input/output) is being registered by ProSim737 and operating correctly - System tabs and the Input Debugger.

System Tabs

The System tabs correlate to various aircraft and simulator systems, and when opened will display a list detailing the functionality of that particular system.

LEFT:  Aircraft System tabs with the Fire tab opened.  The display indicates that the triggered movement on the fire handles is functioning correctly (click to enlarge).

If the switch, toggle or whatever component in question is manipulated, there will be a corresponding indication shown in the Systems tab for that component.

I'm unsure if the System tabs were designed with problem troubleshooting in mind. Nevertheless, the various tabs can provide useful and helpful information and should form part of your troubleshooting system. 

Input Debugger

The Input Debugger (help/updates) is very easy to use, and the information it generates in its text box may help determine where a problem may reside.

The first time the Input Debugger is selected, a display window (debugger window) will open showing dozens of entries; the list can be confusing to read.  It's recommended to clear the list to make the debugger easier to use (press the clear list tab). 

LEFT:  Screen grab of Input Debugger. (click to enlarge).

With the Input Debugger open, you physically move the component in question (switch, toggle, lever, etc).  As soon as you move the component, you will note that its input, output and other related information is displayed in the debugger window.

The use of the Systems tab and Input Debugger is an ideal way to check that ProSim737 has registered the movement (input/output) of a component.

There is also a MCP debug option located in the config file of the MCP software.  Opening the debug option in the MCP only displays information concerning the MCP.

Log Files

ProSim737 generates two files that can be used for troubleshooting; the log.txt and crashlog.txt files. 

The main system log and crashlog files are located in the main ProSim737 folder, however, log and crash files are also located in any folder that a instance of ProSim is run from (for example, display folders, CDU and audio folder).  Scrutinizing these files can often provide incite to the cause of a problem.

The log files, with time can become quite voluminous.  This is because additional information is added to the log everytime  ProSim737 is opened.  Often it’s easier to view a file that displays information that relates to the last simulation session. 

Therefore, when trying to troubleshoot an issue, it's a good idea to delete the log.txt and crashlog.txt files. The software will automatically generate both files from scratch when ProSim737 is re-run, and the resultant entries will only be from the last simulator session - this makes for easier reading.

The detail of the log files can be increased if necessary.  To select more detailed (aka verbose) logging, open the User Interface (config/configuration).  In the Main tab, beneath Logging and Updates, there is a drop down box - select either normal or verbose logging. 

It’s recommended, when using the simulator, to leave logging set to normal (unless testing).  The reason for this is because the verbose option will generate a significant increase in the number of fentries to the various logs, and no doubt use system resources.  

If a crashlog file is not generated for some reason, navigate to the Windows Event Viewer.  The Event Viewer may provide further information (google Event Viewer if you are unsure what this is).

Important Points:

  • ProSim737 will generate a new log.txt and crashlog.txt file if either of the files are deleted. 
  • Whenever posting to the ProSim-AR forum a question concerning a problem, its a very good idea to attach the log.txt and crashlog.txt files to the thread.  These files can then be perused by the Development Group.

Debug Mode

The debug mode is an advanced option that should only be used when requested by the Development Group (config/configuration/main).   Some explanation of the mode is needed.

ProSim737 will only generate a crashlog.txt that relates to problems within its own software.  ProSim737 will not generate a crashlog.txt file is the problem is located outside of its software.  In such circumstances, the debug mode can be used to force ProSim737 to generate a crashlog.txt file.  This may aid in troubleshooting.

The debug mode will generate a large volume of entries, which to anyone but a software developer will be  nonsensical.  The generated files should be sent to the Development Group.

Important Points:

  • If the problem you are experiencing does NOT generating a crashlog.txt file (after deleting the file), then the problem is NOT related to the ProSim737 software, but rather to an outside source.
  • The debug mode should ONLY be used to generate the crashlog.txt file, after which it should be turned off.  Furthermore, it should only be used if requested by the Development Group.

Other Potential Causes of Problems

The list could be infinite!  However, the following 'potential culprits' seem to regularly cause problems for some users.

Opening Sequence of ProSim737 Modules and Flight Simulator

Sometimes following an update, ProSim737 will crash (drop-out).  If this should occur, there may be an issue with the sequence that the various programs are opened (run).

Theoretically, all the ProSim737 modules should connect automatically with the main ProSim737 module no matter what sequence they are opened. This said, changing the sequence that the ProSim737 main module is opened can resolve the issue.

Some users have reported that opening P3D/FSX before ProSim737 resolves drop-out issues, while others indicate the opposite.  Likewise, some users report that the main ProSim737 module should be opened prior to opening the other ProSim737 modules.

Whatever the correct sequence, changing the sequence that programs are opened should form part of your initial troubleshooting regime.

Windows Power Management Settings

If a USB device disconnect occurs after a period of elapsed time, then the computer’s Power Management Settings should be checked.

The Power Management Settings  enable the computer to turn off a device to save power; this is done following a period of elapsed time, or after a device has not been used for some time (for example, USB devices and display monitors).

LEFT:  Screen capture (Windows 10) showing Device Manager and Power Management Settings properties box (click to enlarge).

Earlier operating systems maintained the settings established in Power Management, however, Windows 10 has a nasty habit of changing the Power Management settings without warning.  Therefore, the first check should be the device manager to check that the settings are as they should be.  

In the Device Manager dialog box, expand the Universal Serial Bus controllers tab, right-click each USB Root Hub, and click Properties. In the USB Root Hub Properties dialog box, click the Power Management tab.  The setting that allows the computer to turn off the device must be turned OFF (do not tick/check).

Additionally, check the Power and Sleep options. Depending on the operating system used, there may also be other tabs associated with power options.  Search Advanced Power Settings/USB/ and suspend/disable power management or sleep functions.

.Net Framework

Without going into detail, .Net Framework (pronounced dot Net) is a language that is designed to bridge other computer languages so that they can be understood.  .Net Framework is designed and written by Micro$oft, and ProSim-AR have used it in newer releases of ProSim737.  

As at writing, the latest .Net Framework release is 4.72.  ProSim737 (release 214 and above) will not function without .Net Framework release 4.72 being installed.  .Net Framework must be installed to all client and server computers.

Windows 10 Updates

Windows 10 has a feature that automatically updates essential files (as determined by Micro$oft) when the computer is connected to the Internet.  Often, the user is unaware that the files have been updated, as the update occurs in the background.

Sometimes a problem will occur when a Windows update deselects features in ProSim737 that are necessary, such as drivers, etc.

The Windows 10 updating feature can be deactivated if you use Windows 10 Professional, however, it cannot be deactivated in the Home edition (without registry hacking). 

Batch Files and Shortcuts

It’s common for individuals to use a batch file to open ProSim737, or at the very least to use a shortcut to the original .exe file within a specific folder.  It’s also commonplace to rename the .exe file to something meaningful other than ProSim Display (of which there are several instances).  

DO NOT rename the original .exe file.  Rather make a shortcut to the file (right click and make shortcut) and rename this file.  If you do rename the original .exe file, the Version Manager will not replace the renamed .exe file and the release update will fail.

Dedicated Forum and Requesting Help

ProSim-AR has a dedicated forum that is actively monitored by the Development Group. 

If unable to resolve your issue, the log.txt and crashlog.txt files can be posted to the forum along with a detailed subject line and description of the problem.  In most cases, the Development Group rectify problems quickly.  Failing this, you can submit a support ticket via the ProSim-AR website.

Important Point:

  • I cannot emphasis the importance of a detailed subject line.  It's counter intruitve to think that someone will open a thread that says "Help Me" or "Problem PS Doesn't Work" as oppossed to "Marker Sound Not Working With PS Audio", or "MCP Disconnects when Opening ProSim".


The above mentioned information is valid as at the time of writing with Release Version 2.20b2.  However, ProSim-AR frequently update their software, and a future update may change what I have documented.

Final Call

The procedure to update the ProSim737 avionics suite is relatively straightforward, and the updating process streamlined and effective.   Nevertheless, the avionics suite is a complex piece of software and problems can occur following an update.  

The User Interface and Version Manager are powerful tools that can be used to customize the way that ProSim737 is updated and configured, and be used to troubleshoot problems.  Additionally, highly detailed logs can be generated which can be used by the Development Group to aid in rectifying problems.  This said, often the easiest solution to resolve a problem is to reinstall ProSim737 to its virgin state (from the ProSim-AR website), and reinstall your backed up configuration files.

This article has dealt primarily with updating and some of the potential problems that may develop; troubleshooting has only been briefly addressed.  Despite this, the above-mentioned recommendations should rectify most of the problems that may present when updating the avioincs suite.

Acronyms and Glossary

Development Group - ProSim737 Development Group (software developer).
Level D/Type 7 Simulation - Full flight simulator (FFS) is a term used by national (civil) aviation authorities (NAA) for a high technical level of flight simulator. ... A Level D/Type 7 simulator simulates all aircraft systems that are accessible from the flight deck and are critical to training.
Manipulate - A term to mean move.  It could be a switch, toggle, button, lever or anything else that can be physically moved.
Run - Term meaning to run or open a program.
User Interface - The User Interface used to access the customizable features of ProSim737.  The User Interface is accessible by clicking the ProSim737 icon.
Version Manager – ProSim737 user interface used to configure and customise the ProSim737 avionics suite.

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Reader Comments (2)

Hello: I was about to buy the avionics parcel from prosim when I read your article.

Is prosim OK or do recommend another suite to use. I have read that prosim have troubles with VNAV and LNAV in addition to other problems.

Can you help me decide please. Thank you, Kate
July 7, 2019 | Unregistered CommenterKate Browne
Hello Kate

All avionic suites have issues, except those that the airline's use for training.

ProSim737 definitely has some problems (VNAV and LNAV) along with a poor management culture. The poor management culture and lack of communication with clients is probably more of a issue than the actual issues with the suite...

Sim Avionics works well for the most part, however, it is convoluted and complicated to set-up. ProSim737 is very easy to set-up and configure.

I would wait a tad and try to purchase a second hand version of ProSim737. You do see them for sale on the ProSim737 forum from time to time.

Regards, F2A
July 10, 2019 | Registered CommenterFLAPS 2 APPROACH

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