diff --git a/AirplaneWithRadar/AirplaneWithRadar/AirplaneCollectionInfo.cs b/AirplaneWithRadar/AirplaneWithRadar/AirplaneCollectionInfo.cs
new file mode 100644
index 0000000..e041ae6
--- /dev/null
+++ b/AirplaneWithRadar/AirplaneWithRadar/AirplaneCollectionInfo.cs
@@ -0,0 +1,21 @@
+namespace AirplaneWithRadar.Generics { 
+    internal class AirplaneCollectionInfo : IEquatable<AirplaneCollectionInfo>
+    {
+        public string Name { get; private set; }
+        public string Description { get; private set; }
+        public AirplaneCollectionInfo(string name, string description)
+        {
+            Name = name;
+            Description = description;
+        }
+        public bool Equals(AirplaneCollectionInfo? other)
+        {
+            if (this.Name == other?.Name) { return true; }
+            return false;
+        }
+        public override int GetHashCode()
+        {
+            return Name.GetHashCode();
+        }
+    }
+}
diff --git a/AirplaneWithRadar/AirplaneWithRadar/AirplaneCompareByColor.cs b/AirplaneWithRadar/AirplaneWithRadar/AirplaneCompareByColor.cs
new file mode 100644
index 0000000..95bdc9c
--- /dev/null
+++ b/AirplaneWithRadar/AirplaneWithRadar/AirplaneCompareByColor.cs
@@ -0,0 +1,30 @@
+using AirplaneWithRadar.PaintObjects;
+using AirplaneWithRadar.Entities;
+
+namespace AirplaneWithRadar
+{
+    internal class AirplaneCompareByColor : IComparer<PaintAirplane?>
+    {
+        public int Compare(PaintAirplane? x, PaintAirplane? y)
+        {
+            if (x == null || x.AirplaneEntity == null)
+            {
+                throw new ArgumentNullException(nameof(x));
+            }
+            if (y == null || y.AirplaneEntity == null)
+            {
+                throw new ArgumentNullException(nameof(y));
+            }
+            if (x.GetType().Name != y.GetType().Name)
+            {
+                return x.GetType().Name.CompareTo(y.GetType().Name);
+            }
+            var colorCompare = x.AirplaneEntity.BodyColor.Name.CompareTo(y.AirplaneEntity.BodyColor.Name);
+            if (!(x is PaintAirplaneWithRadar && y is PaintAirplaneWithRadar))
+            {
+                return colorCompare;
+            }
+            return ((AirplaneWithRadarEntity)x.AirplaneEntity).AdditColor.Name.CompareTo(((AirplaneWithRadarEntity)y.AirplaneEntity).AdditColor.Name);
+        }
+    }
+}
diff --git a/AirplaneWithRadar/AirplaneWithRadar/AirplaneCompareByType.cs b/AirplaneWithRadar/AirplaneWithRadar/AirplaneCompareByType.cs
new file mode 100644
index 0000000..cc741c7
--- /dev/null
+++ b/AirplaneWithRadar/AirplaneWithRadar/AirplaneCompareByType.cs
@@ -0,0 +1,30 @@
+using AirplaneWithRadar.PaintObjects;
+
+namespace AirplaneWithRadar.Generics
+{
+    internal class AirplaneCompareByType : IComparer<PaintAirplane?>
+    {
+        public int Compare(PaintAirplane? x, PaintAirplane? y)
+        {
+            if (x == null || x.AirplaneEntity == null)
+            {
+                throw new ArgumentNullException(nameof(x));
+            }
+            if (y == null || y.AirplaneEntity == null)
+            {
+                throw new ArgumentNullException(nameof(y));
+            }
+            if (x.GetType().Name != y.GetType().Name)
+            {
+                return x.GetType().Name.CompareTo(y.GetType().Name);
+            }
+            var speedCompare = x.AirplaneEntity.Speed.CompareTo(y.AirplaneEntity.Speed);
+            if (speedCompare != 0)
+            {
+                return speedCompare;
+            }
+            return x.AirplaneEntity.Weight.CompareTo(y.AirplaneEntity.Weight);
+        }
+
+    }
+}
diff --git a/AirplaneWithRadar/AirplaneWithRadar/AirplaneNotFoundException.cs b/AirplaneWithRadar/AirplaneWithRadar/AirplaneNotFoundException.cs
index 9b63331..a645398 100644
--- a/AirplaneWithRadar/AirplaneWithRadar/AirplaneNotFoundException.cs
+++ b/AirplaneWithRadar/AirplaneWithRadar/AirplaneNotFoundException.cs
@@ -8,8 +8,7 @@ namespace AirplaneWithRadar.Exceptions
         public AirplaneNotFoundException(int i) : base($"Не найден объект по позиции { i}") { }
         public AirplaneNotFoundException() : base() { }
         public AirplaneNotFoundException(string message) : base(message) { }
-        public AirplaneNotFoundException(string message, Exception exception) : base(message, exception)
-        { }
+        public AirplaneNotFoundException(string message, Exception exception) : base(message, exception) { }
         protected AirplaneNotFoundException(SerializationInfo info, StreamingContext contex) : base(info, contex) { }
     }
 }
diff --git a/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericCollection.cs b/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericCollection.cs
index 1e39bad..0448649 100644
--- a/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericCollection.cs
+++ b/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericCollection.cs
@@ -13,6 +13,8 @@ namespace AirplaneWithRadar.Generics
         private readonly int placeSizeHeight = 70;
         private readonly SetGeneric<T> collection;
 
+        public void SortSet(IComparer<T?> comparer) => collection.SortSet(comparer);
+
         public AirplanesGenericCollection(int picWidth, int picHeight)
         {
             int width = picWidth / placeSizeWidth;
@@ -28,7 +30,7 @@ namespace AirplaneWithRadar.Generics
             {
                 return -1;
             }
-            return collect?.collection.Insert(obj);
+            return collect?.collection.Insert(obj, new PaintAirplaneEqutables());
         }
         public static bool operator -(AirplanesGenericCollection<T, U> collect, int pos)
         {
@@ -84,7 +86,6 @@ namespace AirplaneWithRadar.Generics
                 j--;
             }
         }
-
         public IEnumerable<T?> GetAirplanes => collection.GetAirplanes();
     }
 }
diff --git a/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericStorage.cs b/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericStorage.cs
index 848eb28..06ce2a1 100644
--- a/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericStorage.cs
+++ b/AirplaneWithRadar/AirplaneWithRadar/AirplanesGenericStorage.cs
@@ -8,8 +8,8 @@ namespace AirplaneWithRadar.Generics
     internal class AirplanesGenericStorage
     {
 
-        readonly Dictionary<string, AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>> airplaneStorages;
-        public List<string> Keys => airplaneStorages.Keys.ToList();
+        readonly Dictionary<AirplaneCollectionInfo, AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>> airplaneStorages;
+        public List<AirplaneCollectionInfo> Keys => airplaneStorages.Keys.ToList();
         private readonly int pictWidth;
         private readonly int pictHeight;
 
@@ -18,7 +18,7 @@ namespace AirplaneWithRadar.Generics
         private static readonly char separatorForObject = ':';
         public AirplanesGenericStorage(int pictureWidth, int pictureHeight)
         {
-            airplaneStorages = new Dictionary<string, AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>>();
+            airplaneStorages = new Dictionary<AirplaneCollectionInfo, AirplanesGenericCollection <PaintAirplane, PaintObjectAirplane>>();
             pictWidth = pictureWidth;
             pictHeight = pictureHeight;
         }
@@ -29,7 +29,7 @@ namespace AirplaneWithRadar.Generics
                 File.Delete(filename);
             }
             StringBuilder data = new();
-            foreach (KeyValuePair<string, AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>> record in airplaneStorages)
+            foreach (KeyValuePair<AirplaneCollectionInfo, AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>> record in airplaneStorages)
             {
                 StringBuilder records = new();
                 foreach (PaintAirplane? elem in record.Value.GetAirplanes)
@@ -99,7 +99,7 @@ namespace AirplaneWithRadar.Generics
                             }
                         }
                     }
-                    airplaneStorages.Add(name, collection);
+                    airplaneStorages.Add(new AirplaneCollectionInfo(name, String.Empty), collection);
                 }
                 return;
             }
@@ -107,20 +107,27 @@ namespace AirplaneWithRadar.Generics
 
         public void AddSet(string name)
         {
-            if (airplaneStorages.ContainsKey(name)) { return; }
-            airplaneStorages.Add(name, new AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>(pictWidth, pictHeight));
+            var newColl = new AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>(pictWidth, pictHeight);
+            if (Keys.Contains(new AirplaneCollectionInfo(name, string.Empty))) 
+            {
+                MessageBox.Show("Набор с таким именем уже существует", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (airplaneStorages.ContainsKey(new AirplaneCollectionInfo(name, String.Empty))) { return; }
+            airplaneStorages.Add(new AirplaneCollectionInfo(name, String.Empty), newColl);
         }
         public void DelSet(string name)
         {
-            if (airplaneStorages.ContainsKey(name))
-                airplaneStorages.Remove(name);
+            if (airplaneStorages.ContainsKey(new AirplaneCollectionInfo(name, String.Empty)))
+                airplaneStorages.Remove(new AirplaneCollectionInfo(name, String.Empty));
         }
         public AirplanesGenericCollection<PaintAirplane, PaintObjectAirplane>? this[string ind]
         {
             get
             {
-                if (airplaneStorages.ContainsKey(ind)) return airplaneStorages[ind];
-                return null;
+                if (!airplaneStorages.ContainsKey(new AirplaneCollectionInfo(ind, String.Empty)))
+                    return null;
+                return airplaneStorages[new AirplaneCollectionInfo(ind, String.Empty)];
             }
         }
     }
diff --git a/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.Designer.cs b/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.Designer.cs
index 4b003e6..7ac0f75 100644
--- a/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.Designer.cs
+++ b/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.Designer.cs
@@ -48,6 +48,8 @@
             сохранитьToolStripMenuItem = new ToolStripMenuItem();
             загрузитьToolStripMenuItem = new ToolStripMenuItem();
             файлToolStripMenuItem = new ToolStripMenuItem();
+            buttonSortByColor = new Button();
+            buttonSortByType = new Button();
             groupBox1.SuspendLayout();
             groupBox2.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)pictureBoxCollection).BeginInit();
@@ -56,6 +58,8 @@
             // 
             // groupBox1
             // 
+            groupBox1.Controls.Add(buttonSortByType);
+            groupBox1.Controls.Add(buttonSortByColor);
             groupBox1.Controls.Add(groupBox2);
             groupBox1.Controls.Add(maskedTextBoxNumber);
             groupBox1.Controls.Add(ButtonRefreshCollection);
@@ -76,14 +80,14 @@
             groupBox2.Controls.Add(listBoxStorages);
             groupBox2.Location = new Point(13, 22);
             groupBox2.Name = "groupBox2";
-            groupBox2.Size = new Size(204, 209);
+            groupBox2.Size = new Size(204, 185);
             groupBox2.TabIndex = 5;
             groupBox2.TabStop = false;
             groupBox2.Text = "Наборы";
             // 
             // buttonDelObject
             // 
-            buttonDelObject.Location = new Point(17, 178);
+            buttonDelObject.Location = new Point(17, 150);
             buttonDelObject.Name = "buttonDelObject";
             buttonDelObject.Size = new Size(170, 25);
             buttonDelObject.TabIndex = 7;
@@ -112,22 +116,22 @@
             // 
             listBoxStorages.FormattingEnabled = true;
             listBoxStorages.ItemHeight = 15;
-            listBoxStorages.Location = new Point(10, 93);
+            listBoxStorages.Location = new Point(10, 80);
             listBoxStorages.Name = "listBoxStorages";
-            listBoxStorages.Size = new Size(188, 79);
+            listBoxStorages.Size = new Size(188, 64);
             listBoxStorages.TabIndex = 4;
             listBoxStorages.SelectedIndexChanged += listBoxStorages_SelectedIndexChanged;
             // 
             // maskedTextBoxNumber
             // 
-            maskedTextBoxNumber.Location = new Point(39, 289);
+            maskedTextBoxNumber.Location = new Point(39, 319);
             maskedTextBoxNumber.Name = "maskedTextBoxNumber";
             maskedTextBoxNumber.Size = new Size(161, 23);
             maskedTextBoxNumber.TabIndex = 3;
             // 
             // ButtonRefreshCollection
             // 
-            ButtonRefreshCollection.Location = new Point(20, 370);
+            ButtonRefreshCollection.Location = new Point(23, 400);
             ButtonRefreshCollection.Name = "ButtonRefreshCollection";
             ButtonRefreshCollection.Size = new Size(194, 46);
             ButtonRefreshCollection.TabIndex = 2;
@@ -137,7 +141,7 @@
             // 
             // ButtonDeleteAirplane
             // 
-            ButtonDeleteAirplane.Location = new Point(20, 318);
+            ButtonDeleteAirplane.Location = new Point(23, 348);
             ButtonDeleteAirplane.Name = "ButtonDeleteAirplane";
             ButtonDeleteAirplane.Size = new Size(194, 46);
             ButtonDeleteAirplane.TabIndex = 1;
@@ -147,9 +151,9 @@
             // 
             // ButtonAddAirplane
             // 
-            ButtonAddAirplane.Location = new Point(23, 237);
+            ButtonAddAirplane.Location = new Point(30, 267);
             ButtonAddAirplane.Name = "ButtonAddAirplane";
-            ButtonAddAirplane.Size = new Size(194, 46);
+            ButtonAddAirplane.Size = new Size(181, 46);
             ButtonAddAirplane.TabIndex = 0;
             ButtonAddAirplane.Text = "Добавить самолёт";
             ButtonAddAirplane.UseVisualStyleBackColor = true;
@@ -192,14 +196,14 @@
             // сохранитьToolStripMenuItem1
             // 
             сохранитьToolStripMenuItem1.Name = "сохранитьToolStripMenuItem1";
-            сохранитьToolStripMenuItem1.Size = new Size(180, 22);
+            сохранитьToolStripMenuItem1.Size = new Size(133, 22);
             сохранитьToolStripMenuItem1.Text = "Сохранить";
             сохранитьToolStripMenuItem1.Click += SaveToolStripMenuItem_Click;
             // 
             // загрузитьToolStripMenuItem1
             // 
             загрузитьToolStripMenuItem1.Name = "загрузитьToolStripMenuItem1";
-            загрузитьToolStripMenuItem1.Size = new Size(180, 22);
+            загрузитьToolStripMenuItem1.Size = new Size(133, 22);
             загрузитьToolStripMenuItem1.Text = "Загрузить";
             загрузитьToolStripMenuItem1.Click += LoadToolStripMenuItem_Click;
             // 
@@ -224,6 +228,26 @@
             файлToolStripMenuItem.Size = new Size(48, 20);
             файлToolStripMenuItem.Text = "Файл";
             // 
+            // buttonSortByColor
+            // 
+            buttonSortByColor.Location = new Point(125, 223);
+            buttonSortByColor.Name = "buttonSortByColor";
+            buttonSortByColor.Size = new Size(86, 38);
+            buttonSortByColor.TabIndex = 6;
+            buttonSortByColor.Text = "Сортировка по цвету";
+            buttonSortByColor.UseVisualStyleBackColor = true;
+            buttonSortByColor.Click += buttonSortByColor_Click;
+            // 
+            // buttonSortByType
+            // 
+            buttonSortByType.Location = new Point(31, 223);
+            buttonSortByType.Name = "buttonSortByType";
+            buttonSortByType.Size = new Size(88, 38);
+            buttonSortByType.TabIndex = 7;
+            buttonSortByType.Text = "Сортировка по типу";
+            buttonSortByType.UseVisualStyleBackColor = true;
+            buttonSortByType.Click += buttonSortByType_Click;
+            // 
             // FormAirplaneCollection
             // 
             AutoScaleDimensions = new SizeF(7F, 15F);
@@ -267,5 +291,7 @@
         private ToolStripMenuItem файлToolStripMenuItem;
         private ToolStripMenuItem сохранитьToolStripMenuItem1;
         private ToolStripMenuItem загрузитьToolStripMenuItem1;
+        private Button buttonSortByType;
+        private Button buttonSortByColor;
     }
 }
\ No newline at end of file
diff --git a/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.cs b/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.cs
index 8ae04ce..2256519 100644
--- a/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.cs
+++ b/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.cs
@@ -1,7 +1,7 @@
 using AirplaneWithRadar.Generics;
 using AirplaneWithRadar.Exceptions;
 using Microsoft.Extensions.Logging;
-
+using AirplaneWithRadar.PaintObjects;
 
 namespace AirplaneWithRadar
 {
@@ -23,7 +23,7 @@ namespace AirplaneWithRadar
             listBoxStorages.Items.Clear();
             for (int i = 0; i < storage.Keys.Count; i++)
             {
-                listBoxStorages.Items.Add(storage.Keys[i]);
+                listBoxStorages.Items.Add(storage.Keys[i].Name);
             }
             if (listBoxStorages.Items.Count > 0 && (index == -1 || index >= listBoxStorages.Items.Count))
             {
@@ -109,6 +109,11 @@ namespace AirplaneWithRadar
                     MessageBox.Show($"Ошибка при добавлении: {ex.Message}");
                     logger.LogWarning($"Ошибка: {ex.Message}");
                 }
+                catch (ArgumentException ex)
+                {
+                    MessageBox.Show($"Ошибка при добавлении: {ex.Message}");
+                    logger.LogWarning($"Ошибка: {ex.Message}");
+                }
             });
             formAirplaneConfig.Show();
         }
@@ -203,9 +208,29 @@ namespace AirplaneWithRadar
                     MessageBoxButtons.OK, MessageBoxIcon.Error);
                     logger.LogWarning($"Ошибка при загрузке: {ex.Message}");
                 }
-                
+
             }
 
         }
+
+        private void buttonSortByType_Click(object sender, EventArgs e) => CompareAirplanes(new AirplaneCompareByType());
+
+
+        private void buttonSortByColor_Click(object sender, EventArgs e) => CompareAirplanes(new AirplaneCompareByColor());
+
+        private void CompareAirplanes(IComparer<PaintAirplane?> comparer)
+        {
+            if (listBoxStorages.SelectedIndex == -1)
+            {
+                return;
+            }
+            var obj = storage[listBoxStorages.SelectedItem.ToString() ?? string.Empty];
+            if (obj == null)
+            {
+                return;
+            }
+            obj.SortSet(comparer);
+            pictureBoxCollection.Image = obj.ShowAirplanes();
+        }
     }
 }
diff --git a/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.resx b/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.resx
index 7bf303f..3871620 100644
--- a/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.resx
+++ b/AirplaneWithRadar/AirplaneWithRadar/FormAirplaneCollection.resx
@@ -18,7 +18,7 @@
     <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
     <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
     <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
-    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing"">Blue</data>
     <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
         <value>[base64 mime encoded serialized .NET Framework object]</value>
     </data>
diff --git a/AirplaneWithRadar/AirplaneWithRadar/PaintAirplaneEqutables.cs b/AirplaneWithRadar/AirplaneWithRadar/PaintAirplaneEqutables.cs
new file mode 100644
index 0000000..9fc7236
--- /dev/null
+++ b/AirplaneWithRadar/AirplaneWithRadar/PaintAirplaneEqutables.cs
@@ -0,0 +1,58 @@
+using AirplaneWithRadar.PaintObjects;
+using AirplaneWithRadar.Entities;
+using System.Diagnostics.CodeAnalysis;
+
+namespace AirplaneWithRadar.Generics;
+
+internal class PaintAirplaneEqutables : IEqualityComparer<PaintAirplane>
+{
+    public bool Equals(PaintAirplane? x, PaintAirplane? y)
+    {
+        if (x == null || x.AirplaneEntity == null)
+        {
+            throw new ArgumentNullException(nameof(x));
+        }
+        if (y == null || y.AirplaneEntity == null)
+        {
+            throw new ArgumentNullException(nameof(y));
+        }
+        if (x.GetType().Name != y.GetType().Name)
+        {
+            return false;
+        }
+        if (x.AirplaneEntity.Speed != y.AirplaneEntity.Speed)
+        {
+            return false;
+        }
+        if (x.AirplaneEntity.Weight != y.AirplaneEntity.Weight)
+        {
+            return false;
+        }
+        if (x.AirplaneEntity.BodyColor != y.AirplaneEntity.BodyColor)
+        {
+            return false;
+        }
+        if (x is PaintAirplaneWithRadar && y is PaintAirplaneWithRadar)
+        {
+            AirplaneWithRadarEntity xEntity = (AirplaneWithRadarEntity)x.AirplaneEntity;
+            AirplaneWithRadarEntity yEntity = (AirplaneWithRadarEntity)x.AirplaneEntity;
+            if (xEntity.AdditColor != yEntity.AdditColor)
+            {
+                return false;
+            }
+            if (xEntity.AdditFuelPod != yEntity.AdditFuelPod)
+            {
+                return false;
+            }
+            if (xEntity.RadarOnBoard != yEntity.AdditFuelPod)
+            {
+                return false;
+            }
+        }
+        return true;
+    }
+    public int GetHashCode([DisallowNull] PaintAirplane obj)
+    {
+        return obj.GetHashCode();
+    }
+}
diff --git a/AirplaneWithRadar/AirplaneWithRadar/SetGeneric.cs b/AirplaneWithRadar/AirplaneWithRadar/SetGeneric.cs
index 23a317a..9f5f0d0 100644
--- a/AirplaneWithRadar/AirplaneWithRadar/SetGeneric.cs
+++ b/AirplaneWithRadar/AirplaneWithRadar/SetGeneric.cs
@@ -1,4 +1,5 @@
 using AirplaneWithRadar.Exceptions;
+using System.Collections.Generic;
 
 namespace AirplaneWithRadar.Generics;
 
@@ -14,7 +15,9 @@ internal class SetGeneric<T>
         places = new List<T?>(count);
     }
 
-    public int Insert(T airplane)
+    public void SortSet(IComparer<T?> comparer) => places.Sort(comparer);
+
+    public int Insert(T airplane, IEqualityComparer<T?>? equal = null)
     {
         if (Count == 0)
         {
@@ -24,8 +27,11 @@ internal class SetGeneric<T>
         int emptyPosition = -1;
         for (int i = 0; i < Count; i++)
         {
-            if (places[i] == null)
+            if (places[i] is null)
             {
+                if (equal is not null && places.Contains(airplane, equal))
+                    throw new ArgumentException("Объект уже существует");
+
                 emptyPosition = i;
                 break;
             }
@@ -37,13 +43,16 @@ internal class SetGeneric<T>
         
         if (emptyPosition < 0)
         {
+            if (equal is not null && places.Contains(airplane, equal))
+                throw new ArgumentException("Объект уже существует");
+
             places.Add(airplane);
             return 0;
         }
         Insert(airplane, emptyPosition);
         return 0;
     }
-    public int Insert(T airplane, int position)
+    public int Insert(T airplane, int position, IEqualityComparer<T?>? equal = null)
     {
         if (position > maxCount)
         {
@@ -53,8 +62,11 @@ internal class SetGeneric<T>
         {
             return -1;
         }
-        if (places[position] == null)
+        if (places[position] is null)
         {
+            if (equal is not null && places.Contains(airplane, equal))
+                throw new ArgumentException("Объект уже существует");
+
             places[position] = airplane;
             return position;
         }
@@ -62,12 +74,15 @@ internal class SetGeneric<T>
         int emptyPosition = -1;
         for (int i = position + 1; i < Count; i++)
         {
-            if (places[i]==null)
+            if (places[i] is null)
             {
+                if (equal is not null && places.Contains(airplane, equal))
+                    throw new ArgumentException("Объект уже существует");
+
                 emptyPosition = i;
                 break;
             }
-        }
+        }   
         if (emptyPosition < 0)
         {
             return -1;