Navigation data
Flight Display Pro · iPhone and Apple Watch · Android and Wear OS
The navigation display draws airports, runways, navaids, waypoints, airways, airspace and a base map from a database bundled in the app. The database is built once, before the app is compiled, from the public sources below. The app makes no network connections and never updates it.
Sources
| Source | Provides | Licence |
|---|---|---|
| OurAirports | airports, runways, VOR/NDB/DME | CC0 1.0 (public domain) |
| Natural Earth | coastlines, borders, lakes | public domain |
| FlightGear navdata, compiled by Robin A. Peel, cycle 2013.10 | waypoints, airways, navaids | GNU GPL v2.0 or later |
| openAIP | airspace, reporting points | CC BY-NC 4.0 |
Attribution: Airspace data © openAIP contributors, CC BY-NC 4.0. Made with Natural Earth. Which sources a given build contains, with their data cycle, is listed on the app's disclaimer page.
Source form of the FlightGear data
The FlightGear files are licensed under the GNU General Public License, version 2 or later, copyright © 2013 Robin A. Peel. The app ships them transformed into an SQLite database. As the GPL asks, the complete source of that transformed work is available here:
- The original files
nav.dat.gz,fix.dat.gzandawy.dat.gzin the FlightGear repository: sourceforge.net/p/flightgear/fgdata/ci/next/tree/Navaids/ - The script that downloads them and builds the database: build_navdb.py, released under the same GPL-2.0-or-later licence. It needs Python 3 only.
To rebuild the database:
python3 build_navdb.py --flightgearThe app itself is separate software that reads the database at run time. It contains no FlightGear code and is not covered by the GPL. If you cannot download the files above, email tanutapi@gmail.com and I will send them.
openAIP data in a paid app
openAIP publishes its data under CC BY-NC 4.0 and, on its home page, allows third parties to ship the data with paid applications as long as they do not exclusively sell the data itself. Flight Display Pro sells a flight display; the airspace layer is one part of it, bundled at build time, with no data updates offered.