{
  "_doc": "Festes Mapping Heli-Key (c1...c16) → OE-Kennzeichen + NATO-Funkalphabet-Aussprache. Wird in Audio-Texten verwendet ('Christophorus acht' → 'X-Ray Echo November') und im Spiel als Anzeige. Ab 2026-06-01.",
  "_quelle": "Recherchierte Kennzeichen aus heli-stations.json + Auffuell-Pool fuer nicht recherchierte Stuetzpunkte.",
  "_short_form": "Im Funk wird oft die Kurzform ohne X-Ray verwendet (nur letzte 2 Buchstaben). Hier behalten wir die volle Form fuer didaktische Klarheit.",
  "mapping": {
    "c1":  { "callsign": "OE-XVB", "nato": "X-Ray Victor Bravo",   "station": "Innsbruck",      "tower": "Innsbruck Tower" },
    "c2":  { "callsign": "OE-XVI", "nato": "X-Ray Victor India",   "station": "Krems",          "tower": "Wien Information" },
    "c3":  { "callsign": "OE-XEL", "nato": "X-Ray Echo Lima",      "station": "Wr. Neustadt",   "tower": "Wien Information" },
    "c4":  { "callsign": "OE-XEY", "nato": "X-Ray Echo Yankee",    "station": "Kitzbühel",     "tower": "Innsbruck Tower" },
    "c5":  { "callsign": "OE-XEZ", "nato": "X-Ray Echo Zulu",      "station": "Zams",           "tower": "Innsbruck Tower" },
    "c6":  { "callsign": "OE-XVL", "nato": "X-Ray Victor Lima",    "station": "Salzburg",       "tower": "Salzburg Tower" },
    "c7":  { "callsign": "OE-XER", "nato": "X-Ray Echo Romeo",     "station": "Lienz",          "tower": "Klagenfurt Tower" },
    "c8":  { "callsign": "OE-XEN", "nato": "X-Ray Echo November",  "station": "Nenzing",        "tower": "Innsbruck Tower" },
    "c9":  { "callsign": "OE-XVO", "nato": "X-Ray Victor Oscar",   "station": "Wien-Baumgasse", "tower": "Wien Tower" },
    "c10": { "callsign": "OE-XVP", "nato": "X-Ray Victor Papa",    "station": "Linz",           "tower": "Linz Tower" },
    "c11": { "callsign": "OE-XEK", "nato": "X-Ray Echo Kilo",      "station": "Klagenfurt",     "tower": "Klagenfurt Tower" },
    "c12": { "callsign": "OE-XEM", "nato": "X-Ray Echo Mike",      "station": "Graz",           "tower": "Graz Tower" },
    "c14": { "callsign": "OE-XEW", "nato": "X-Ray Echo Whiskey",   "station": "Niederöblarn",  "tower": "Wien Information" },
    "c16": { "callsign": "OE-XEU", "nato": "X-Ray Echo Uniform",   "station": "Pinkafeld",      "tower": "Wien Information" }
  },
  "_zahl_zu_helikey": {
    "_doc": "Welche 'Christophorus <wort-zahl>' im Audio-Text gehoert zu welchem Heli-Key. Hilft beim Ersetzen 'Christophorus eins' → NATO-Kennzeichen.",
    "eins": "c1", "zwei": "c2", "drei": "c3", "vier": "c4", "fuenf": "c5",
    "sechs": "c6", "sieben": "c7", "acht": "c8", "neun": "c9", "zehn": "c10",
    "elf": "c11", "zwoelf": "c12", "vierzehn": "c14", "sechzehn": "c16"
  }
}