diff --git a/AirPlaneWithRadar/AirPlaneWithRadar/DrawingObjectPlane.cs b/AirPlaneWithRadar/AirPlaneWithRadar/DrawingObjectPlane.cs
index 775f898..d448c49 100644
--- a/AirPlaneWithRadar/AirPlaneWithRadar/DrawingObjectPlane.cs
+++ b/AirPlaneWithRadar/AirPlaneWithRadar/DrawingObjectPlane.cs
@@ -39,5 +39,35 @@ namespace AirPlaneWithRadar
         {
            _plain.setPosition(x, y, width, height);
         }
+
+        public bool Equals(IDrawingObject? other)
+        {
+            if (other == null)
+            {
+                return false;
+            }
+            var otherPlain = other as DrawingObjectPlane;
+            if (otherPlain == null)
+            {
+                return false;
+            }
+            var plain = _plain.Plain;
+            var otherPlainPlain = otherPlain._plain.Plain;
+
+            if (plain.Speed != otherPlainPlain.Speed)
+            {
+                return false;
+            }
+            if (plain.Weight != otherPlainPlain.Weight)
+            {
+                return false;
+            }
+            if (plain.BodyColor != otherPlainPlain.BodyColor)
+            {
+                return false;
+            }
+           
+            return true;
+        }
     }
 }
diff --git a/AirPlaneWithRadar/AirPlaneWithRadar/IDrawingObject.cs b/AirPlaneWithRadar/AirPlaneWithRadar/IDrawingObject.cs
index f635355..5cd8596 100644
--- a/AirPlaneWithRadar/AirPlaneWithRadar/IDrawingObject.cs
+++ b/AirPlaneWithRadar/AirPlaneWithRadar/IDrawingObject.cs
@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace AirPlaneWithRadar
 {
-    internal interface IDrawingObject
+    internal interface IDrawingObject : IEquatable<IDrawingObject>
     {
         public float Step { get; }
         void SetObject(int x, int y, int width, int height);
diff --git a/AirPlaneWithRadar/AirPlaneWithRadar/MapWithSetPlainGeneric.cs b/AirPlaneWithRadar/AirPlaneWithRadar/MapWithSetPlainGeneric.cs
index 7ad30c9..f7db018 100644
--- a/AirPlaneWithRadar/AirPlaneWithRadar/MapWithSetPlainGeneric.cs
+++ b/AirPlaneWithRadar/AirPlaneWithRadar/MapWithSetPlainGeneric.cs
@@ -8,7 +8,7 @@ namespace AirPlaneWithRadar
 {
     internal class MapWithSetPlainGeneric
     <T, U>
-        where T : class, IDrawingObject
+        where T : class, IDrawingObject, IEquatable<T>
         where U : AbstractMap
     {
         private readonly int _pictureWidth;
diff --git a/AirPlaneWithRadar/AirPlaneWithRadar/SetPlaneGeneric.cs b/AirPlaneWithRadar/AirPlaneWithRadar/SetPlaneGeneric.cs
index bc20ae1..3d0bee2 100644
--- a/AirPlaneWithRadar/AirPlaneWithRadar/SetPlaneGeneric.cs
+++ b/AirPlaneWithRadar/AirPlaneWithRadar/SetPlaneGeneric.cs
@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 namespace AirPlaneWithRadar
 {
     internal class SetPlaneGeneric<T>
-     where T : class
+     where T : class, IEquatable<T>
 
     {
         private readonly List<T> _places;
@@ -26,6 +26,7 @@ namespace AirPlaneWithRadar
         }
         public int Insert(T plain, int position)
         {
+            /////
             if (_places.Count == _maxCount)
             {
                 throw new StorageOverFullException(_maxCount);