diff --git a/include/air_space/air_space_data.h b/include/air_space/air_space_data.h
index 2e656bc..2ad69ce 100644
--- a/include/air_space/air_space_data.h
+++ b/include/air_space/air_space_data.h
@@ -7,11 +7,16 @@
 
 #include <math/vec3D.h>
 
-struct BlockedAirCorridor {
+struct Point {
+  Vec3D vec;
+  std::size_t id {0};
+};
+
+struct AirCorridor {
   std::size_t id1{0};
   std::size_t id2{0};
 
-  bool operator==(const BlockedAirCorridor& other) const {
+  bool operator==(const AirCorridor& other) const {
     return (id1 == other.id1 && id2 == other.id2) ||
            (id1 == other.id2 && id2 == other.id1);
   }
@@ -28,16 +33,14 @@ struct HighReliefZone {
 };
 
 struct AirSpace {
-  QVector<Vec3D> points;
-  QSet<BlockedAirCorridor> air_corridors;
+  QVector<Point> points;
+  QSet<AirCorridor> air_corridors;
   QVector<Pvo> pvo_list;
   QVector<HighReliefZone> high_relief_zones;
 };
 
-inline unsigned int qHash(const BlockedAirCorridor& key, uint seed = 0) {
-  std::size_t id_a = std::min(key.id1, key.id2);
-  std::size_t id_b = std::max(key.id1, key.id2);
-  return qHash(std::make_pair(id_a, id_b), seed);
+inline uint qHash(const AirCorridor& corridor, uint seed = 0) {
+    return ::qHash(corridor.id1, seed) ^ ::qHash(corridor.id2, seed);
 }
 
 #endif
\ No newline at end of file
diff --git a/include/json/airspace_loader/airspace_loader.h b/include/json/airspace_loader/airspace_loader.h
index 4008d54..63e8303 100644
--- a/include/json/airspace_loader/airspace_loader.h
+++ b/include/json/airspace_loader/airspace_loader.h
@@ -13,13 +13,7 @@
 #include <QSet>
 
 #include "math/vec3D.h"
-
-struct AirSpace {
-  QVector<Vec3D> points;
-  QSet<BlockedAirCorridor> air_corridors;
-  QVector<Pvo> pvo_list;
-  QVector<HighReliefZone> high_relief_zones;
-};
+#include <air_space/air_space_data.h>
 
 class AirspaceLoader {
  public:
@@ -31,6 +25,4 @@ class AirspaceLoader {
   static AirSpace _ConstructAirspace(QJsonArray& arr);
 };
 
-#endif
-
 #endif
\ No newline at end of file
diff --git a/include/math/vec3D.h b/include/math/vec3D.h
index 2c21cf3..3dd5ca8 100644
--- a/include/math/vec3D.h
+++ b/include/math/vec3D.h
@@ -10,7 +10,7 @@ class Vec3D {
     double z { 0.0 };
 
     Vec3D() = default;
-    Vec3D(double x_, double y_, double z_) : x(x_), y(y_), z(z_) {}
+    Vec3D(double x_, double y_, double z_ = 0) : x(x_), y(y_), z(z_) {}
 
     Vec3D operator+(const Vec3D& other) const { return {x + other.x, y + other.y, z + other.z}; }
     Vec3D operator-(const Vec3D& other) const { return {x - other.x, y - other.y, z - other.z}; }
diff --git a/src/json/airspace_loader/airspace.loader.cpp b/src/json/airspace_loader/airspace.loader.cpp
index dbc9312..39fc354 100644
--- a/src/json/airspace_loader/airspace.loader.cpp
+++ b/src/json/airspace_loader/airspace.loader.cpp
@@ -37,17 +37,18 @@ AirSpace AirspaceLoader::_ConstructAirspace(QJsonArray& arr) {
   QJsonArray pointsArray = arr[0].toArray();
   for (const auto& item : pointsArray) {
     QJsonObject obj = item.toObject();
-    Vec3D point;
-    point.x = obj["x"].toDouble();
-    point.y = obj["y"].toDouble();
-    point.z = 0;
+    Point point;
+    point.id = obj["id"].toInt();
+    point.vec.x = obj["x"].toDouble();
+    point.vec.y = obj["y"].toDouble();
+    point.vec.z = 0;
     result.points.append(point);
   }
 
   QJsonArray corridorsArray = arr[1].toArray();
   for (const auto& item : corridorsArray) {
     QJsonObject obj = item.toObject();
-    BlockedAirCorridor corridor;
+    AirCorridor corridor;
     corridor.id1 = obj["id1"].toInteger();
     corridor.id2 = obj["id2"].toInteger();
     result.air_corridors.insert(corridor);