PilotDeck base map — data notice
NOT FOR NAVIGATION. Situational awareness only; the FIR lines and names are community data.

Files in this folder (format: scripts/basemap/binfmt.mjs; built by scripts/build-basemap.mjs from the inputs
listed in data-src/basemap/SOURCES.json, each pinned by SHA-256):
  world.v1.bin, regional.v1.bin, detail.v1.bin  land, lakes, borders (layers "land", "lakes", "borders") and FIR
                                                 lines (layer "fir")
  fir.v1.bin                                     FIR ids, names, label anchors, FIRs on each side of each line
  airports.v1.bin                                runway length and size class of the deck's airports
  shading.v1.bin                                 terrain shading tiles, z0–4

1. FIR lines and names (the "fir" layer of world/regional/detail.v1.bin, and all of fir.v1.bin)
   Source: VATSIM VAT-Spy Data Project contributors, https://github.com/vatsimnetwork/vatspy-data-project
   Commit f33f07978736f5e6aa18de8b7940939e03a120cd (2026-10-01T19:46:38Z, "Fixed UZSD duplicate")
   Files Boundaries.geojson and VATSpy.dat, fetched 2026-10-03T09:41:46Z from:
     https://raw.githubusercontent.com/vatsimnetwork/vatspy-data-project/f33f07978736f5e6aa18de8b7940939e03a120cd/Boundaries.geojson
     https://raw.githubusercontent.com/vatsimnetwork/vatspy-data-project/f33f07978736f5e6aa18de8b7940939e03a120cd/VATSpy.dat
   Licence: Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0),
     https://creativecommons.org/licenses/by-sa/4.0/ — full text in CC-BY-SA-4.0.txt beside this notice.
   These files are an adapted work. They are licensed under CC BY-SA 4.0 as well, separately from the
   app's GPLv3 code. Changes made by PilotDeck:
     - kept FIR-level polygons only (VATSIM sub-sectors, terminal areas, ACC overlays and umbrella areas
       left out; where VAT-Spy files a FIR twice, once per airspace layer, the FIR's own polygon kept);
     - dissolved sectors and approach/oceanic parts into their FIR (Australia YBBB/YMMM, New Zealand
       NZZC/NZZO, Piarco, Sevilla, Padova, Agadir, Guam, Lagos, Maputo, Bujumbura, Kuching, Tahiti,
       Rarotonga, Faleolo, Nadi, Accra Oceanic, Canarias Oceanic, Mount Pleasant, Kosovo); China's VATSIM
       sectors overlap each other and cross its FIR limits, so China is drawn as its outer limit only,
       without internal FIR lines or labels;
     - where two kept polygons still overlap (stratified airspace), the smaller one owns the overlap;
     - ICAO ids for VATSIM-only ids (CZQO shown as CZQX Gander Oceanic, the oceanic KZNY as KZWY, GOOC as
       GOOO Dakar Oceanic);
     - the two drawings VAT-Spy often has of one border (up to 2.5 NM apart) snapped into one line,
       each shared border kept once, then simplified (Douglas–Peucker, 2 NM) and rounded;
     - names cleaned and curated (e.g. EMIRATES for OMAE, LIMA for SPIM, one PIARCO, FUKUOKA for RJJJ);
     - the Gulf corrected from official AIPs: EMIRATES FIR rebuilt from AIP UAE ENR 2.1 (AIRAC 2026-P10),
       which removes four VATSIM lobes of 12–24 NM; Muscat's edge given the UAE point 250000N 0563500E; the
       Doha block NE of Qatar drawn as its own area labelled "OTDF SFC–FL245" (Bahrain above; AIP Qatar
       ENR 2.1 of 16 APR 2026 and AIP Bahrain ENR 2.1); the triangle 250224N 0523054E – 245959N 0521837E –
       245046N 0522215E, and the pocket between Qatar, the UAE and Saudi Arabia, given to Bahrain as AIP
       Bahrain ENR 2.1 lists them (AIP Qatar leaves them outside Doha FIR);
     - Brazil's FIRs (SBAZ, SBBS, SBCW, SBRE, SBAO) left out, with the borders they share, until checked against AIP Brasil ENR 2.1.
   FIR data date: 2026-10-01.
   Attribution line: FIR: VATSIM VAT-Spy contributors, CC BY-SA 4.0, simplified by PilotDeck, data 01 OCT 2026

2. Land, lakes, country borders, terrain shading
   Source: Natural Earth, https://www.naturalearthdata.com — ne_50m_land, ne_50m_lakes,
   ne_50m_admin_0_boundary_lines_land fetched 2026-10-03T09:43:01Z from
   https://github.com/nvkelso/natural-earth-vector (geojson/); SR_50M shaded relief 2026-10-03
   from https://naciscdn.org/naturalearth/50m/raster/SR_50M.zip
   Licence: "All versions of Natural Earth raster + vector map data found on this website are in the
   public domain." Simplified, rounded and re-tiled (relief re-levelled to neutral grey, greyscale JPEG) by
   PilotDeck.
   Attribution line: Land, relief: Natural Earth (public domain)

3. Airport runway class
   Source: OurAirports, https://ourairports.com/data/ — airports.csv fetched 2026-10-03T09:42:50Z,
   runways.csv fetched 2026-10-03T10:02:27Z
   Licence: "All data is released to the Public Domain, and comes with no guarantee of accuracy or fitness
   for use." Longest open runway and airport type joined to PilotDeck's airport list.
   Attribution line: Airports: OurAirports (public domain)

Map attribution line, all together:
  Land, relief: Natural Earth (public domain) · FIR: VATSIM VAT-Spy contributors, CC BY-SA 4.0, simplified by
  PilotDeck, data 01 OCT 2026 · Airports: OurAirports (public domain) · NOT FOR NAVIGATION