First Start

Little Navmap will copy and prepare the included Navigraph database on the first startup. See Navigraph for more information about the integration.

The Scenery Library Dialog dialog will be shown once the preparation is finished. From there you can select all recognized Flight Simulators and load their scenery libraries into Little Navmap's internal database.

Note that X-Plane cannot be recognized automatically. You have to set the path in the Scenery Library Dialog before you can load the database or selecting it in the menu.

One database is kept for each simulator and can be changed on the fly in the Scenery Library Menu.

A warning dialog will be shown on Windows when starting Little Navmap the first time on a system without FSX or P3D flight simulator installations. See chapter Running without Flight Simulator Installation for more information on this.

You can also go directly to the Scenery Library Dialog from there if you have X-Plane installed.

One or more scenery library databases may need to be updated when you install a new version of Little Navmap. A question dialog will pop up prompting you to erase the now incompatible database. You can reload the scenery in the Scenery Library Dialog after erasing the databases.

Recommended things to do after Installing

  • The elevation data which is used by default is limited and has a lot of problems. Therefore, I recommend to download and use the offline GLOBE elevation data. See Options Dialog / Flight Plan Elevation Profile for more information.
  • Have a look at the tutorials if you use the program the first time.
  • See Install Navigraph Updates on my home page for information how to update Little Navmap's navigation data.
  • See Connecting to a Flight Simulator for the next step to use Little Navmap as a moving map. The included Little Xpconnect plugin has to be installed for X-Plane.

How to run a network Setup

See the two chapters below if you like to run Little Navmap in a networked setup using one computer for the flight simulator and one computer to run Little Navmap.

How to prepare a network setup:

  1. Install/extract the whole Little Navmap archive on the flying and network computer.
  2. Copy Little Xpconnect to the X-Plane plugins folder if you use X-Plane.
  3. Use Little Navmap to generate the scenery database on the flying computer. Main menu -> Scenery Library -> Load Scenery Library ...
  4. Copy the database files to the network computer. Quit Little Navmap before copying.

Flying in a network setup:

  1. Start the simulator
  2. Start Little Navconnect on the flying computer.
  3. Run Little Navmap on the network computer.
  4. Connect Little Navmap on the network computer to Little Navconnect on the flying computer. Main menu -> Tools -> Flight Simulator Connection ...

See links above for detailed instructions.


User Interface

Dock Windows

The user interface of Little Navmap consists of a main window and several dock windows which can be detached from the main window or arranged in any order within the main window.

The docked windows can be moved around in their docked position and can be detached from the main window by simply dragging them outside of the main window, by double-clicking their title bar or by clicking on the window symbol on the top right.

Double click on the docked window's title bar or click on the window symbol again to move the windows back into their docked position.

All docked windows except the map window can be closed if they are not needed. You can even drop docked windows on each other to create a tabbed view. The tabs will appear at the bottom of the dock stack in this case.

Hold Ctrl while clicking on the window titlebar to prevent a window from going into docked state and keep it floating.

Toolbars are also movable by clicking on the left handle and can also be closed or detached from the main window.

Use the Main Menu -> Window menu to restore closed windows or toolbars.

The Main Menu -> Window -> Reset Window Layout menu item can be used to reset the state and positions of all dock windows and toolbars back to their default.

Context Menus

Use the context menus to build a flight plan.

Context menus can be found in the following places:

The context menus provide functionality to get more information about an object at the clicked position or to build or edit a flight plan.

Tooltip Help, Help Buttons and Help Menu

The help menu of Little Navmap contains links to the online help, an included offline help PDF document, online tutorials and the map legend.

The program uses tooltips to display more information on buttons and other controls.

A more detailed description is shown on the left side of the statusbar if you hover the mouse over a menu item.

Most dialogs and some dock windows show help buttons Help which will open the corresponding sections of the online manual.

Window Title

The main window title shows the application name and version.

Furthermore, it indicates the currently selected simulator database (FSX, FSXSE, P3DV2, P3DV3, P3DV4 or XP11), the flight plan file name, the aircraft performance file name with trailing * for both if either has changed.

A N will be appended if the Navigraph database is used. Example below for Prepar3D:

  • P3DV4: All features on the map and all information in dialogs and windows comes from the flight simulator database.
  • P3DV4 / N: Airports and ILS are shown and used from the flight simulator database. Navaids, airspace, airways and procedures are used from the Navigraph database.
  • (P3DV4) / N: All data is used from the Navigraph database. No aprons, no taxiways and no parking positions are available for airports.

Example: Little Navmap 2.2.1 - XP11 / N LOAG_LOWW.fmc * - PA30 Twin Comanche.lnmperf

Version 2.2.1, X-Plane selected, Navigraph database in use, flight plan LOAG_LOWW.fmc changed and performance profile PA30 Twin Comanche.lnmperf unchanged.

Information and Simulator Aircraft Text

You can change the text size permanently in the options dialog for these windows.

A quick way to change the text size is to use the mousewheel and Ctrl key. This setting won't be saved across sessions, though.

Error Messages

Little Navmap shows error messages with white text on red background for problems with the aircraft performance, top of descent/climb calculation and other issues.

Tooltips on these error messages give more help in some cases.


Tabs that appear on top of a window are fixed. A tooltip gives more information about the function of a tab.

Tabs at the bottom of a window appear when you drop dock windows on each other. Grab a window title bar to move a window out of the stacked display. You can change the order of these tabs by dragging them around.

The mousewheel allows to cycle between tabs in a more convenient way.

Copy and Paste

Almost all dialogs, text labels and all information windows in Little Navmap allow copy and paste.

You can select the text using the mouse and then either use Ctrl+C or the context menu to copy it to the clipboard. The information and simulator aircraft windows even support copying of formatted text including the icons. This can be helpful to report errors.

The table views for the flight plan or airport/navaid search results allow copying of the results in CSV format to the clipboard which can be pasted into a spreadsheet program like LibreOffice Calc or Microsoft Excel.

Translation and Locale

Little Navmap is currently available in several languages.

I will happily support anybody who would like to translate the user interface or manual into another language. Language packages can be added to a Little Navmap installation later once they are available. See Translating in the Github Little Navmap wiki for more information.

You can override the user interface language in the dialog Options the the tab User Interface.

Despite using the English language in the user interface the locale settings of the operating system will be used. So, e.g. on a German version of Windows you will see comma as a decimal separator instead of the English dot.

The language and locale settings can be forced to English in the dialog Options on the tab User Interface if a translated user interface is not desired.

Please note that some screenshots in this manual were taken using German locale, therefore a comma is used as a decimal separator and a dot as a thousands separator.

Map Legend

The legend explains all the map icons and the Flight Plan Elevation Profile icons. It is available in the Legend dock window or in this manual: Legend.

Naming Conventions used in this Manual

Highlighted text is used to denote window, menu, button, file or directory names. See the Glossary for explanations of common terms in this manual.


Airports get a zero to five star rating depending on facilities. Airports that have no rating are considered boring and will be displayed using a gray symbol below all other airports on the map (Empty Airport). This behavior can be switched off in the Options dialog on the Map Display tab.

The criteria below are used to calculate the rating. Each item gives one star:

  1. Add-on (or 3D for X-Plane)
  2. Parking positions (ramp or gate)
  3. Taxiways
  4. Aprons
  5. Tower building (only if at least one of the other conditions is met).

All airports that are not located in the default Scenery directory of FSX/P3D or are located in the Custom Scenery directory of X-Plane are considered add-on airports which raises the rating by one star.

Airports in the Custom Scenery/Global Airports/Earth nav data/apt.dat file of X-Plane are 3D airports which raises the rating by one star too.

Little Navmap comes with a ready to use database from Navigraph including airspaces, SIDs, STARs and more. The database can be updated by using Navigraph's FMS Data Manager.

See the chapter Navigation Databases for more information.

FSX and Prepar3D

Little Navmap is compatible with navdata updates from fsAerodata or FSX/P3D Navaids update.


Little Navmap will use any navdata updates that are installed in the directory Custom Data. Any older updates installed in the GPS directories are not used.

User-defined data from the files user_fix.dat and user_nav.dat is read and merged into the database if found.

Note that neither ARINC nor the FAACIFP files are supported.

Magnetic Declination

The calibrated magnetic declination of a VOR may differ from the actual declination in a region as it does in reality. Therefore, magnetic course values might differ in some cases.

FSX and Prepar3D

The declination used to calculate the magnetic course is taken from the magdec.bgl file in the scenery database.

Updates for this file are available here: FSX/P3D Navaids update.


The declination values for X-Plane (airports and all navaids except VORs) is calculated based on the included magdec.bgl file which is based on the values for the beginning of 2017.

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