Where the data in Birdbird comes from, the terms it is used under, and what it must not be used for. Birdbird is training material: none of the data below replaces official, current aeronautical information.
Airspace, airports, navaids and route points used by Route Explorer and the briefing pack.
Planned source for airspace in Route Explorer (not yet in use).
openAIP (openaip.net)
Airports and navaids for search, route building and the navigation log.
OurAirports (ourairports.com)
IFR significant points for Finland.
Fintraffic ANS, eAIP Finland
IFR significant points for Iceland.
Isavia ANS, eAIP Iceland
Not included. These AIPs are not used until the publishers give permission. You can add the points you need yourself under My fixes in Route Explorer.
Official AIP dataBirdbird does not use data from an official AIP without the publisher's permission. Route Explorer and the briefing pack are not official VFR or IFR charts. Always check positions, airspace and frequencies against the current AIP and charts.
The terrain profile, the 3D terrain view and the highest-terrain figure per map square are computed from public digital elevation data.
Elevation for the terrain profile and the 3D terrain. The tiles combine several public elevation datasets, listed below.
Mapzen / AWS Terrain Tiles
Terrain in Europe.
Produced using Copernicus data and information funded by the European Union – EU-DEM layers
Terrain in Norway.
© Kartverket
Terrain outside the areas above, and the global base.
SRTM and GMTED2010 (USGS); ETOPO1 (NOAA)
Coastlines and the base map.
Made with Natural Earth
The highest-terrain figure is Birdbird's own number from these data: the highest point plus 300 ft for unknown obstacles, rounded up to the next 100 ft. It is not an official minimum safe altitude or maximum elevation figure.
Magnetic variation for each leg in Route Explorer and the navigation log, used to turn true track into magnetic track. The model is valid from 2025 to 2030.
World Magnetic Model (WMM2025), NOAA NCEI and BGS
Charted variation in the AIP can differ slightly from the model, because charts are updated on their own cycle. For planning on a real flight, use the variation on the current chart.
How they are usedRegulations are summarised and referenced, not reproduced. Rules change: always use the current consolidated version published by EASA, the national authority and ICAO, and your operator's manuals where they apply.
The EASA rules libraryWhen you ask the instructor about rules, the matching library entries are sent with your question, and the answer cites them as chips that open the official text in a new tab. Birdbird cannot read the EASA website while you use it, so the library shows the revision and date it was checked rather than claiming to be up to date. Browse the library · EASA Easy Access Rules
The labs use simplified physics to show how things relate. Each lab says what it leaves out. Use the numbers to understand, not to make operational decisions.
Figures for the light twin, the A320 and the King Air B200 are typical, rounded or illustrative values for teaching. They are not taken from, and do not replace, the AFM, the FCOM or the manufacturer's data.
Tests and question banks are written in Birdbird's own words to check understanding. They are not copied from any official or commercial question bank.
Not for operational useAlways follow the AIP, the aircraft flight manual, your operator's procedures and your instructor.
All fonts and libraries are served from Birdbird itself. No page loads fonts or scripts from a third-party service.
Headings, body text, and numbers and units.
3D terrain, the wind tunnel and the cockpit view.
Reading PDF documents in your browser for Flight Intelligence.
Reading Word documents in your browser for Flight Intelligence.
Spotted a missing attribution or a source used outside its terms? Contact