[HOW-TO] LittleNavMap Quick Start Quide - TO BE UPDATED WITH NEW 2.6.1 RELEASE

Form the Author: Little Navmap is a free open source flight planner, navigation tool, moving map, airport search and airport information system for Flight Simulator X, Prepar3D and X-Plane and is available for Windows, Apple macOS and Linux .

It provides a detailed realtime map with waypoints, airport information along with a suite of user tools such as the ability to bookmark/save points of interest during flight (great for VFR) etc… The tool is extremely configurable, sometimes to a fault but it does the job quite well.

In this wiki we will cover:

2.Connecting to MSFS2020 and Running LittleNavmap
3.Flight Tracking (In Progress)
4.Saving Points of Interest (TODO)
5.Advanced Features


You can download it at Little Navmap for windows, MacOS and Linux. It is a zip archive that does not come with an installer. Simply unzip and copy to your preferred folder. You can create a shortcut to the executable if you so desire.

  1. Once you launch LittleNavmap you will be greeted with a dialog box recommending the installation of online elevation data for better accuracy of the Digital Elevation Model (DEM). It is not necessary but recommended. To get to the data go to GLOBE and chose the tiles you are interested in or simply get the full set by clicking on All Tiles in One .zip file.
    Once you have have downloaded and unzipped the archive, save it to your preferred location and go to:
    Tools->Options. On the left hand pane select Cache and Files. Under Flight Elevation Profile Chose Use Offline GLOBE Elevation Data and point it to your GLOBE directory.

2.This next part involves the selection of the source of your nav data. Two options, use the default navigraph data provided with LNM or point it to your X-Plane or FSX/Prepar3D installation locatiion. The second option is best as your dataset will be a lot more exhaustive relative to number of airports but also details provided (taxiways for example).

If you are prompted as below, you will need to either point it to your X-plane/Prepar3D or if you do not have either installed, simply click “Close” we will use the navigraph database instead. If you do have X-Plane or Prepar3D click “Load” and wait for the navdata to be loaded. The LNM author is working on a mechanism to do the same using the MSFS BGL files but this is a work in progress. We will update the Wiki once avaialble.

In case you do not have X-Plane or Prepar3D installed, we will use the Navigraph method instead. This is accomplished by choosing the option “Use Navigraph for All Features”

As stated above this is a limiting option, the warning in LNM states “This means that aprons, taxiways, parking positions, runway surface information and other information is not available. Additionally smaller airports might be missing.”

We are now ready to connect to the simulator.

Connecting to MSFS2020

We will now connect to the simulator. The first step is to install the simconnect library from the author’s page:

Unzip and install SimConnect

Connect to the simulator. Tools->Flight Simulator Connection


Make sure you Uncheck the 2 checkboxes. “Fetch AI…”

You are also able to run LNM from a remote machine. In that case you would have to download LittleNavConnect and install that on the machine running the sim and install LNM on the machine you want to use as a client.

Once you launch LittleNavConnect you will be greeted by

Make sure “FSX or Prepar3D” is selected. Click on the Settings button and disable all AI Fetching

Flight Tracking

Once connected, LNM should display you aircraft position and speed via the map. You wil usually find the map on the right hand side of the window. You can resize it, move it, undock it.

For a more complete experience I recommend adding your flight plan to LNM. This will allow you see to see your progress in real time and take advantage of features inherent to LNM like Top Of Descent calculation, time to next waypoint etc.

There are two ways to enter your flight plan, you can upload a supported flight plan file downloaded from simbrief or you can enter the waypoints by hand. For MSFS I suggest you simply copy the waypoints from the NAVLOG.

To create the file plan. Go to Flight Plan->New Flight Plan from Route Description

You can then copy the waypoints from the NAVLOG into the window. Make sure to add the departure airport first and finish it with the arrival airport. Click on Read Route Description to parse the route. If all is well you can then click on Create Flight Plan.


You are now tracking your flight along its route.

The Flight plan profile shows your altitude and provides a TOC (Top Of Climb) and TOD (Top Of Descent) indicator. You need to enter the flight max altitude in the flight plan window to show the proper profile.

Saving Points of Interest

To save the location of a particular point of interest, simply right click on the area and click Add Userpoint.

You can then provide additional details about your point of interest including Type, tag and a description.

You can find your userpoints under the Search window in the *Userpoints" tab. You can also do a search via the menu “Userdata->Userpoint Search” or even export them to CSV.