diff --git a/Simbriefimport.py b/Simbriefimport.py
index 62b167d..dee6224 100644
--- a/Simbriefimport.py
+++ b/Simbriefimport.py
@@ -12,8 +12,11 @@ import shutil
 def conf():
     appname = os.path.basename(sys.argv[0])
     appname = appname.replace(".py", ".conf")
-    absFilePath = os.path.abspath(__file__)
-    absFilePath = absFilePath.replace(".py", ".conf")
+
+    absFilePath = os.getcwd()
+    absFilePath = absFilePath.replace(".exe", ".conf")
+    print(appname)
+    print(absFilePath)
 
     if os.path.isfile(absFilePath) is False:
         print(appname + ' scheint es nicht zu geben.')
@@ -40,12 +43,22 @@ def conf():
         with open(absFilePath) as file:
             passw = json.load(file)
     return passw
+def get_app_dir():
+    # Fall: als .exe (z. B. mit PyInstaller gebaut)
+    if getattr(sys, 'frozen', False):
+        return Path(sys.executable).parent
+    # Fall: normales Python-Skript
+    return Path(__file__).resolve().parent
+def resource_path(filename: str) -> Path:
+    if hasattr(sys, "_MEIPASS"):
+        return Path(sys._MEIPASS) / filename
+    return Path(__file__).resolve().parent / filename
 def minuten_zu_zeit(minuten) -> str:
     minuten = int(minuten)
     stunden = minuten // 60        # volle Stunden
     rest_min = minuten % 60        # verbleibende Minuten
     return f"{stunden}:{rest_min:02d}"  # zweistellige Minutenanzeige
-def aircr_name(aircraft_icao):
+def old_aircr_name(aircraft_icao):
     with open("aircraft_full.json", "r", encoding="utf-8") as f:
         aircraft_data = json.load(f)
     if aircraft_icao in aircraft_data:
@@ -54,7 +67,17 @@ def aircr_name(aircraft_icao):
         print("Code nicht vorhanden")
         antwort = "unbekanntes Luftfahrzeug"
     return (antwort)
-def start_name(ori_icao):
+def aircr_name(aircraft_icao: str) -> str:
+    json_path = resource_path("aircraft_full.json")
+
+    with json_path.open("r", encoding="utf-8") as f:
+        aircraft_data = json.load(f)
+
+    if aircraft_icao in aircraft_data:
+        return aircraft_data[aircraft_icao].get("name", "unbekanntes Luftfahrzeug")
+    else:
+        return "unbekanntes Luftfahrzeug"
+def old_start_name(ori_icao):
 
     with open("airports_full.json", "r", encoding="utf-8") as f:
         ori_data = json.load(f)
@@ -64,7 +87,17 @@ def start_name(ori_icao):
         print("Code nicht vorhanden")
         antwort = "unbekannter Startflughafen"
     return (antwort)
-def airlinename(name):
+def start_name(ori_icao: str) -> str:
+    global _airports_cache
+
+    if _airports_cache is None:
+        with resource_path("airports_full.json").open(encoding="utf-8") as f:
+            _airports_cache = json.load(f)
+
+    return _airports_cache.get(
+        ori_icao, {}
+    ).get("name", "unbekannter Startflughafen")
+def old_airlinename(name):
     with open("airlines_full.json", "r", encoding="utf-8") as f:
         airline_data = json.load(f)
     if name in airline_data:
@@ -73,6 +106,19 @@ def airlinename(name):
         print("Code nicht vorhanden")
         antwort = "unbekanntes Luftfahrzeug"
     return (antwort)
+def airlinename(airline_icao: str) -> str:
+    global _airlines_cache
+
+    if _airlines_cache is None:
+        with resource_path("airlines_full.json").open(encoding="utf-8") as f:
+            _airlines_cache = json.load(f)
+
+    return _airlines_cache.get(
+        airline_icao, {}
+    ).get(
+        "name",
+        "unbekannte Fluggesellschaft"
+    )
 def replacedynamic(message):
     message = message.replace('{AIRCRAFT_NAME}', aircraft_name)
     message = message.replace('{DESTINATION_NAME}', dest_name)
@@ -270,8 +316,23 @@ def BACKUP(Pfad):
 
 host = os.getcwd()
 Pfad = os.getcwd() + '/Announcements/'
+_airports_cache = None
+_airlines_cache = None
 
-passw = conf()
+
+
+app_dir = get_app_dir()
+conf_file = app_dir / "Simbriefimport.conf"
+
+if conf_file.exists():
+    print("Konfigurationsdatei gefunden:", conf_file)
+    with open(conf_file) as file:
+        passw = json.load(file)
+
+else:
+    print("Keine Konfigurationsdatei vorhanden:", conf_file)
+
+#passw = conf()
 client = OpenAI(
   api_key=passw['AI']['Token'])