diff --git a/controllers/AircraftTypeGroups.php b/controllers/AircraftTypeGroups.php
new file mode 100644
index 0000000..d35aba7
--- /dev/null
+++ b/controllers/AircraftTypeGroups.php
@@ -0,0 +1,17 @@
+<?php namespace GermanAirlinesVa\Fleet\Controllers;
+
+use Backend\Classes\Controller;
+use BackendMenu;
+
+class AircraftTypeGroups extends Controller
+{
+    public $implement = [        'Backend\Behaviors\ListController',        'Backend\Behaviors\FormController'    ];
+    
+    public $listConfig = 'config_list.yaml';
+    public $formConfig = 'config_form.yaml';
+
+    public function __construct()
+    {
+        parent::__construct();
+    }
+}
diff --git a/controllers/aircrafttypegroups/_list_toolbar.htm b/controllers/aircrafttypegroups/_list_toolbar.htm
new file mode 100644
index 0000000..e43c52b
--- /dev/null
+++ b/controllers/aircrafttypegroups/_list_toolbar.htm
@@ -0,0 +1,18 @@
+<div data-control="toolbar">
+        <a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups/create') ?>" class="btn btn-primary oc-icon-plus"><?= e(trans('backend::lang.form.create')) ?></a>
+            <button
+        class="btn btn-default oc-icon-trash-o"
+        disabled="disabled"
+        onclick="$(this).data('request-data', {
+            checked: $('.control-list').listWidget('getChecked')
+        })"
+        data-request="onDelete"
+        data-request-confirm="<?= e(trans('backend::lang.list.delete_selected_confirm')) ?>"
+        data-trigger-action="enable"
+        data-trigger=".control-list input[type=checkbox]"
+        data-trigger-condition="checked"
+        data-request-success="$(this).prop('disabled', true)"
+        data-stripe-load-indicator>
+        <?= e(trans('backend::lang.list.delete_selected')) ?>
+    </button>
+</div>
diff --git a/controllers/aircrafttypegroups/config_form.yaml b/controllers/aircrafttypegroups/config_form.yaml
new file mode 100644
index 0000000..f8c6829
--- /dev/null
+++ b/controllers/aircrafttypegroups/config_form.yaml
@@ -0,0 +1,10 @@
+name: AircraftTypeGroups
+form: $/germanairlinesva/fleet/models/aircrafttypegroup/fields.yaml
+modelClass: GermanAirlinesVa\Fleet\Models\AircraftTypeGroup
+defaultRedirect: germanairlinesva/fleet/aircrafttypegroups
+create:
+    redirect: 'germanairlinesva/fleet/aircrafttypegroups/update/:id'
+    redirectClose: germanairlinesva/fleet/aircrafttypegroups
+update:
+    redirect: germanairlinesva/fleet/aircrafttypegroups
+    redirectClose: germanairlinesva/fleet/aircrafttypegroups
diff --git a/controllers/aircrafttypegroups/config_list.yaml b/controllers/aircrafttypegroups/config_list.yaml
new file mode 100644
index 0000000..0cca711
--- /dev/null
+++ b/controllers/aircrafttypegroups/config_list.yaml
@@ -0,0 +1,12 @@
+list: $/germanairlinesva/fleet/models/aircrafttypegroup/columns.yaml
+modelClass: GermanAirlinesVa\Fleet\Models\AircraftTypeGroup
+title: AircraftTypeGroups
+noRecordsMessage: 'backend::lang.list.no_records'
+showSetup: true
+showCheckboxes: true
+recordsPerPage: 20
+toolbar:
+    buttons: list_toolbar
+    search:
+        prompt: 'backend::lang.list.search_prompt'
+recordUrl: 'germanairlinesva/fleet/aircrafttypegroups/update/:id'
diff --git a/controllers/aircrafttypegroups/create.htm b/controllers/aircrafttypegroups/create.htm
new file mode 100644
index 0000000..34eca1a
--- /dev/null
+++ b/controllers/aircrafttypegroups/create.htm
@@ -0,0 +1,46 @@
+<?php Block::put('breadcrumb') ?>
+    <ul>
+        <li><a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>">AircraftTypeGroups</a></li>
+        <li><?= e($this->pageTitle) ?></li>
+    </ul>
+<?php Block::endPut() ?>
+
+<?php if (!$this->fatalError): ?>
+
+    <?= Form::open(['class' => 'layout']) ?>
+
+        <div class="layout-row">
+            <?= $this->formRender() ?>
+        </div>
+
+        <div class="form-buttons">
+            <div class="loading-indicator-container">
+                <button
+                    type="submit"
+                    data-request="onSave"
+                    data-hotkey="ctrl+s, cmd+s"
+                    data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
+                    class="btn btn-primary">
+                    <?= e(trans('backend::lang.form.create')) ?>
+                </button>
+                <button 
+                    type="button"
+                    data-request="onSave"
+                    data-request-data="close:1"
+                    data-hotkey="ctrl+enter, cmd+enter"
+                    data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
+                    class="btn btn-default">
+                    <?= e(trans('backend::lang.form.create_and_close')) ?>
+                </button>
+                <span class="btn-text">
+                    <?= e(trans('backend::lang.form.or')) ?> <a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>"><?= e(trans('backend::lang.form.cancel')) ?></a>
+                </span>
+            </div>
+        </div>
+
+    <?= Form::close() ?>
+
+<?php else: ?>
+    <p class="flash-message static error"><?= e(trans($this->fatalError)) ?></p>
+    <p><a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>" class="btn btn-default"><?= e(trans('backend::lang.form.return_to_list')) ?></a></p>
+<?php endif ?>
\ No newline at end of file
diff --git a/controllers/aircrafttypegroups/index.htm b/controllers/aircrafttypegroups/index.htm
new file mode 100644
index 0000000..ea43a36
--- /dev/null
+++ b/controllers/aircrafttypegroups/index.htm
@@ -0,0 +1 @@
+<?= $this->listRender() ?>
diff --git a/controllers/aircrafttypegroups/preview.htm b/controllers/aircrafttypegroups/preview.htm
new file mode 100644
index 0000000..c8fcf6b
--- /dev/null
+++ b/controllers/aircrafttypegroups/preview.htm
@@ -0,0 +1,22 @@
+<?php Block::put('breadcrumb') ?>
+    <ul>
+        <li><a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>">AircraftTypeGroups</a></li>
+        <li><?= e($this->pageTitle) ?></li>
+    </ul>
+<?php Block::endPut() ?>
+
+<?php if (!$this->fatalError): ?>
+
+    <div class="form-preview">
+        <?= $this->formRenderPreview() ?>
+    </div>
+
+<?php else: ?>
+    <p class="flash-message static error"><?= e($this->fatalError) ?></p>
+<?php endif ?>
+
+<p>
+    <a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>" class="btn btn-default oc-icon-chevron-left">
+        <?= e(trans('backend::lang.form.return_to_list')) ?>
+    </a>
+</p>
\ No newline at end of file
diff --git a/controllers/aircrafttypegroups/update.htm b/controllers/aircrafttypegroups/update.htm
new file mode 100644
index 0000000..5d3abd8
--- /dev/null
+++ b/controllers/aircrafttypegroups/update.htm
@@ -0,0 +1,54 @@
+<?php Block::put('breadcrumb') ?>
+    <ul>
+        <li><a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>">AircraftTypeGroups</a></li>
+        <li><?= e($this->pageTitle) ?></li>
+    </ul>
+<?php Block::endPut() ?>
+
+<?php if (!$this->fatalError): ?>
+
+    <?= Form::open(['class' => 'layout']) ?>
+
+        <div class="layout-row">
+            <?= $this->formRender() ?>
+        </div>
+
+        <div class="form-buttons">
+            <div class="loading-indicator-container">
+                <button
+                    type="submit"
+                    data-request="onSave"
+                    data-request-data="redirect:0"
+                    data-hotkey="ctrl+s, cmd+s"
+                    data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
+                    class="btn btn-primary">
+                    <?= e(trans('backend::lang.form.save')) ?>
+                </button>
+                <button
+                    type="button"
+                    data-request="onSave"
+                    data-request-data="close:1"
+                    data-hotkey="ctrl+enter, cmd+enter"
+                    data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
+                    class="btn btn-default">
+                    <?= e(trans('backend::lang.form.save_and_close')) ?>
+                </button>
+                <button
+                    type="button"
+                    class="oc-icon-trash-o btn-icon danger pull-right"
+                    data-request="onDelete"
+                    data-load-indicator="<?= e(trans('backend::lang.form.deleting')) ?>"
+                    data-request-confirm="<?= e(trans('backend::lang.form.confirm_delete')) ?>">
+                </button>
+
+                <span class="btn-text">
+                    <?= e(trans('backend::lang.form.or')) ?> <a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>"><?= e(trans('backend::lang.form.cancel')) ?></a>
+                </span>
+            </div>
+        </div>
+    <?= Form::close() ?>
+
+<?php else: ?>
+    <p class="flash-message static error"><?= e(trans($this->fatalError)) ?></p>
+    <p><a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroups') ?>" class="btn btn-default"><?= e(trans('backend::lang.form.return_to_list')) ?></a></p>
+<?php endif ?>
\ No newline at end of file
diff --git a/lang/en/lang.php b/lang/en/lang.php
index 9cb9e2e..9892a97 100644
--- a/lang/en/lang.php
+++ b/lang/en/lang.php
@@ -15,5 +15,6 @@
         'manufacturers' => 'Aircraft Manufacturers',
         'types' => 'Aircraft Types',
         'aircrafts' => 'Aircrafts',
+        'groups' => 'Aircraft Type Groups',
     ],
 ];
\ No newline at end of file
diff --git a/models/Aircraft.php b/models/Aircraft.php
index c367dc4..948c728 100644
--- a/models/Aircraft.php
+++ b/models/Aircraft.php
@@ -18,7 +18,6 @@ class Aircraft extends Model
   /**
    * @var string The database table used by the model.
    */
-  //public $table = 'germanairlinesva_fleet_aircrafts';
   public $table = 'aircrafts';
   protected $connection = 'germanairlinesva_fleet';
 
diff --git a/models/AircraftManufacturer.php b/models/AircraftManufacturer.php
index 1476d05..9e3ee86 100644
--- a/models/AircraftManufacturer.php
+++ b/models/AircraftManufacturer.php
@@ -18,7 +18,6 @@ class AircraftManufacturer extends Model
   /**
    * @var string The database table used by the model.
    */
-  // public $table = 'germanairlinesva_fleet_aircraft_manufacturers';
   public $table = 'aircraft_manufacturers';
   protected $connection = 'germanairlinesva_fleet';
 
diff --git a/models/AircraftType.php b/models/AircraftType.php
index 57ae90a..317b650 100644
--- a/models/AircraftType.php
+++ b/models/AircraftType.php
@@ -18,7 +18,6 @@ class AircraftType extends Model
   /**
    * @var string The database table used by the model.
    */
-  // public $table = 'germanairlinesva_fleet_aircraft_types';
   public $table = 'aircraft_types';
   protected $connection = 'germanairlinesva_fleet';
 
@@ -31,6 +30,10 @@ class AircraftType extends Model
     'aircraft_manufacturer' => 'GermanAirlinesVa\Fleet\Models\AircraftManufacturer',
   ];
 
+  public $belongsToMany = [
+    'aircraft_type_groups' => 'GermanAirlinesVa\Fleet\Models\AircraftTypeGroup',
+  ];
+
   public $hasMany = [
     'aircrafts' => 'GermanAirlinesVa\Fleet\Models\Aircraft',
   ];
diff --git a/models/AircraftTypeGroup.php b/models/AircraftTypeGroup.php
new file mode 100644
index 0000000..6ab4f57
--- /dev/null
+++ b/models/AircraftTypeGroup.php
@@ -0,0 +1,32 @@
+<?php namespace GermanAirlinesVa\Fleet\Models;
+
+use Model;
+
+/**
+ * Model
+ */
+class AircraftTypeGroup extends Model
+{
+  use \October\Rain\Database\Traits\Validation;
+
+  /*
+   * Disable timestamps by default.
+   * Remove this line if timestamps are defined in the database table.
+   */
+  public $timestamps = false;
+
+  /**
+   * @var string The database table used by the model.
+   */
+  public $table = 'aircraft_type_groups';
+  protected $connection = 'germanairlinesva_fleet';
+
+  /**
+   * @var array Validation rules
+   */
+  public $rules = [];
+
+  public $belongsToMany = [
+    'aircraft_types' => 'GermanAirlinesVa\Fleet\Models\AircraftType',
+  ];
+}
diff --git a/models/aircrafttype/fields.yaml b/models/aircrafttype/fields.yaml
index b254cd5..38c3c4e 100644
--- a/models/aircrafttype/fields.yaml
+++ b/models/aircrafttype/fields.yaml
@@ -1,137 +1,145 @@
 tabs:
-  fields:
-    aircraft_manufacturer:
-      label: Manufacturer
-      nameFrom: name
-      descriptionFrom: description
-      span: auto
-      required: 1
-      type: relation
-      tab: Operational
-    typerating_id:
-      label: Typerating
-      span: auto
-      required: 1
-      type: number
-      tab: Operational
-    only_charter:
-      label: 'Charter Only'
-      span: auto
-      required: 1
-      type: switch
-      tab: Operational
-    type:
-      label: Type
-      span: auto
-      required: 1
-      type: text
-      tab: Operational
-    simbrief_type:
-      label: 'SimBrief Type'
-      span: auto
-      required: 1
-      type: text
-      tab: Operational
-    dom:
-      label: DOM
-      span: auto
-      required: 1
-      type: number
-      tab: Weights
-    mpld:
-      label: 'Max Payload'
-      span: auto
-      required: 1
-      type: number
-      tab: Weights
-    mzfm:
-      label: 'Max ZFM'
-      span: auto
-      required: 1
-      type: number
-      tab: Weights
-    fuel_capacity:
-      label: 'Fuel Capacity'
-      span: auto
-      required: 1
-      type: number
-      tab: Weights
-    mtom:
-      label: 'Max TOM'
-      span: auto
-      required: 1
-      type: number
-      tab: Weights
-    mlam:
-      label: 'Max LAM'
-      span: auto
-      required: 1
-      type: number
-      tab: Weights
-    description:
-      label: Description
-      size: large
-      span: auto
-      required: 1
-      type: richeditor
-      tab: Informational
-    wingspan:
-      label: Wingspan
-      span: auto
-      required: 1
-      type: text
-      tab: Informational
-    length:
-      label: Length
-      span: auto
-      required: 1
-      type: text
-      tab: Informational
-    cruise_speed:
-      label: 'Cruise Speed'
-      span: auto
-      required: 1
-      type: text
-      tab: Informational
-    range:
-      label: Range
-      span: auto
-      required: 1
-      type: text
-      tab: Informational
-    engines:
-      label: Engines
-      span: auto
-      required: 1
-      type: text
-      tab: Informational
-    max_fl:
-      label: 'Max FL'
-      span: auto
-      required: 1
-      type: number
-      tab: Informational
-    capacity_flight_crew:
-      label: 'Flight Crew'
-      span: auto
-      required: 1
-      type: number
-      tab: Informational
-    capacity_cabin_crew:
-      label: 'Cabin Crew'
-      span: auto
-      required: 1
-      type: number
-      tab: Informational
-    capacity_passengers:
-      label: Passengers
-      span: auto
-      required: 1
-      type: number
-      tab: Informational
-    capacity_cargo:
-      label: Cargo
-      span: auto
-      required: 1
-      type: number
-      tab: Informational
+    fields:
+        aircraft_manufacturer:
+            label: Manufacturer
+            nameFrom: name
+            descriptionFrom: description
+            span: auto
+            required: 1
+            type: relation
+            tab: Operational
+        typerating_id:
+            label: Typerating
+            span: auto
+            required: 1
+            type: number
+            tab: Operational
+        only_charter:
+            label: 'Charter Only'
+            span: auto
+            required: 1
+            type: switch
+            tab: Operational
+        type:
+            label: Type
+            span: auto
+            required: 1
+            type: text
+            tab: Operational
+        simbrief_type:
+            label: 'SimBrief Type'
+            span: auto
+            required: 1
+            type: text
+            tab: Operational
+        aircraft_type_groups:
+            label: 'Aircraft Type Groups'
+            nameFrom: comment
+            descriptionFrom: description
+            span: auto
+            required: 1
+            type: relation
+            tab: Operational
+        dom:
+            label: DOM
+            span: auto
+            required: 1
+            type: number
+            tab: Weights
+        mpld:
+            label: 'Max Payload'
+            span: auto
+            required: 1
+            type: number
+            tab: Weights
+        mzfm:
+            label: 'Max ZFM'
+            span: auto
+            required: 1
+            type: number
+            tab: Weights
+        fuel_capacity:
+            label: 'Fuel Capacity'
+            span: auto
+            required: 1
+            type: number
+            tab: Weights
+        mtom:
+            label: 'Max TOM'
+            span: auto
+            required: 1
+            type: number
+            tab: Weights
+        mlam:
+            label: 'Max LAM'
+            span: auto
+            required: 1
+            type: number
+            tab: Weights
+        description:
+            label: Description
+            size: large
+            span: auto
+            required: 1
+            type: richeditor
+            tab: Informational
+        wingspan:
+            label: Wingspan
+            span: auto
+            required: 1
+            type: text
+            tab: Informational
+        length:
+            label: Length
+            span: auto
+            required: 1
+            type: text
+            tab: Informational
+        cruise_speed:
+            label: 'Cruise Speed'
+            span: auto
+            required: 1
+            type: text
+            tab: Informational
+        range:
+            label: Range
+            span: auto
+            required: 1
+            type: text
+            tab: Informational
+        engines:
+            label: Engines
+            span: auto
+            required: 1
+            type: text
+            tab: Informational
+        max_fl:
+            label: 'Max FL'
+            span: auto
+            required: 1
+            type: number
+            tab: Informational
+        capacity_flight_crew:
+            label: 'Flight Crew'
+            span: auto
+            required: 1
+            type: number
+            tab: Informational
+        capacity_cabin_crew:
+            label: 'Cabin Crew'
+            span: auto
+            required: 1
+            type: number
+            tab: Informational
+        capacity_passengers:
+            label: Passengers
+            span: auto
+            required: 1
+            type: number
+            tab: Informational
+        capacity_cargo:
+            label: Cargo
+            span: auto
+            required: 1
+            type: number
+            tab: Informational
diff --git a/models/aircrafttypegroup/columns.yaml b/models/aircrafttypegroup/columns.yaml
new file mode 100644
index 0000000..bc8fedc
--- /dev/null
+++ b/models/aircrafttypegroup/columns.yaml
@@ -0,0 +1,7 @@
+columns:
+    id:
+        label: id
+        type: number
+    comment:
+        label: comment
+        type: text
diff --git a/models/aircrafttypegroup/fields.yaml b/models/aircrafttypegroup/fields.yaml
new file mode 100644
index 0000000..e4804c2
--- /dev/null
+++ b/models/aircrafttypegroup/fields.yaml
@@ -0,0 +1,5 @@
+fields:
+    comment:
+        label: Comment
+        span: auto
+        type: text
diff --git a/plugin.yaml b/plugin.yaml
index 0fcf967..1a23f18 100644
--- a/plugin.yaml
+++ b/plugin.yaml
@@ -22,3 +22,7 @@ navigation:
                 label: 'germanairlinesva.fleet::lang.menu.aircrafts'
                 url: germanairlinesva/fleet/aircrafts
                 icon: icon-plane
+            side-menu-item4:
+                label: 'germanairlinesva.fleet::lang.menu.groups'
+                url: germanairlinesva/fleet/aircrafttypegroups
+                icon: icon-group
diff --git a/updates/builder_table_create_aircraft_manufacturers.php b/updates/builder_table_create_aircraft_manufacturers.php
index 7c0b314..e3c4c35 100644
--- a/updates/builder_table_create_aircraft_manufacturers.php
+++ b/updates/builder_table_create_aircraft_manufacturers.php
@@ -9,7 +9,6 @@ class BuilderTableCreateGermanAirlinesVaAircraftManufacturers extends Migration
   public function up()
   {
     Schema::connection('germanairlinesva_fleet')->create('aircraft_manufacturers', function ($table) {
-      //Schema::create('germanairlinesva_fleet_aircraft_manufacturers', function ($table) {
       $table->engine = 'InnoDB';
       $table->bigIncrements('id')->unsigned();
       $table->string('name');
@@ -21,6 +20,5 @@ class BuilderTableCreateGermanAirlinesVaAircraftManufacturers extends Migration
   public function down()
   {
     Schema::connection('germanairlinesva_fleet')->dropIfExists('aircraft_manufacturers');
-    //Schema::dropIfExists('germanairlinesva_fleet_aircraft_manufacturers');
   }
 }
diff --git a/updates/builder_table_create_aircraft_type_aircraft_type_group.php b/updates/builder_table_create_aircraft_type_aircraft_type_group.php
new file mode 100644
index 0000000..1c9d954
--- /dev/null
+++ b/updates/builder_table_create_aircraft_type_aircraft_type_group.php
@@ -0,0 +1,31 @@
+<?php namespace GermanAirlinesVa\Fleet\Updates;
+
+use Schema;
+use October\Rain\Database\Updates\Migration;
+
+class BuilderTableCreateGermanAirlinesVaFleetAircraftTypesAircraftTypeGroups extends Migration
+{
+  public function up()
+  {
+    Schema::connection('germanairlinesva_fleet')->create('aircraft_type_aircraft_type_group', function ($table) {
+      $table->engine = 'InnoDB';
+      $table->bigInteger('aircraft_type_id')->unsigned();
+      $table
+        ->foreign('aircraft_type_id')
+        ->references('id')
+        ->on('aircraft_types');
+      $table->bigInteger('aircraft_type_group_id')->unsigned();
+      $table
+        ->foreign('aircraft_type_group_id')
+        ->references('id')
+        ->on('aircraft_type_groups');
+    });
+  }
+
+  public function down()
+  {
+    Schema::connection('germanairlinesva_fleet')->disableForeignKeyConstraints();
+    Schema::connection('germanairlinesva_fleet')->dropIfExists('aircraft_type_aircraft_type_group');
+    Schema::connection('germanairlinesva_fleet')->enableForeignKeyConstraints();
+  }
+}
diff --git a/updates/builder_table_create_aircraft_type_groups.php b/updates/builder_table_create_aircraft_type_groups.php
new file mode 100644
index 0000000..3416ea5
--- /dev/null
+++ b/updates/builder_table_create_aircraft_type_groups.php
@@ -0,0 +1,21 @@
+<?php namespace GermanAirlinesVa\Fleet\Updates;
+
+use Schema;
+use October\Rain\Database\Updates\Migration;
+
+class BuilderTableCreateGermanAirlinesVaFleetAircraftTypeGroups extends Migration
+{
+  public function up()
+  {
+    Schema::connection('germanairlinesva_fleet')->create('aircraft_type_groups', function ($table) {
+      $table->engine = 'InnoDB';
+      $table->bigIncrements('id')->unsigned();
+      $table->string('comment');
+    });
+  }
+
+  public function down()
+  {
+    Schema::connection('germanairlinesva_fleet')->dropIfExists('aircraft_type_groups');
+  }
+}
diff --git a/updates/builder_table_create_aircraft_types.php b/updates/builder_table_create_aircraft_types.php
index 13b87c8..735ba38 100644
--- a/updates/builder_table_create_aircraft_types.php
+++ b/updates/builder_table_create_aircraft_types.php
@@ -9,7 +9,6 @@ class BuilderTableCreateGermanAirlinesVaAircraftTypes extends Migration
   public function up()
   {
     Schema::connection('germanairlinesva_fleet')->create('aircraft_types', function ($table) {
-      //Schema::create('germanairlinesva_fleet_aircraft_types', function ($table) {
       $table->engine = 'InnoDB';
       $table->bigIncrements('id')->unsigned();
       $table->bigInteger('aircraft_manufacturer_id')->unsigned();
@@ -47,7 +46,8 @@ class BuilderTableCreateGermanAirlinesVaAircraftTypes extends Migration
 
   public function down()
   {
+    Schema::connection('germanairlinesva_fleet')->disableForeignKeyConstraints();
     Schema::connection('germanairlinesva_fleet')->dropIfExists('aircraft_types');
-    //Schema::dropIfExists('germanairlinesva_fleet_aircraft_types');
+    Schema::connection('germanairlinesva_fleet')->enableForeignKeyConstraints();
   }
 }
diff --git a/updates/builder_table_create_aircrafts copy.php b/updates/builder_table_create_aircrafts.php
similarity index 89%
rename from updates/builder_table_create_aircrafts copy.php
rename to updates/builder_table_create_aircrafts.php
index de5e086..ee2a06f 100644
--- a/updates/builder_table_create_aircrafts copy.php	
+++ b/updates/builder_table_create_aircrafts.php
@@ -8,7 +8,6 @@ class BuilderTableCreateGermanAirlinesVaFleetAircrafts extends Migration
   public function up()
   {
     Schema::connection('germanairlinesva_fleet')->create('aircrafts', function ($table) {
-      //Schema::create('germanairlinesva_fleet_aircrafts', function ($table) {
       $table->engine = 'InnoDB';
       $table->bigIncrements('id')->unsigned();
       $table->bigInteger('aircraft_type_id')->unsigned();
@@ -58,7 +57,8 @@ class BuilderTableCreateGermanAirlinesVaFleetAircrafts extends Migration
 
   public function down()
   {
+    Schema::connection('germanairlinesva_fleet')->disableForeignKeyConstraints();
     Schema::connection('germanairlinesva_fleet')->dropIfExists('aircrafts');
-    //Schema::dropIfExists('germanairlinesva_fleet_aircrafts');
+    Schema::connection('germanairlinesva_fleet')->enableForeignKeyConstraints();
   }
 }
diff --git a/updates/version.yaml b/updates/version.yaml
index 12b6161..01c9b62 100644
--- a/updates/version.yaml
+++ b/updates/version.yaml
@@ -7,3 +7,7 @@
   - builder_table_create_aircraft_types.php
   - 'Created table aircrafts'
   - builder_table_create_aircrafts.php
+  - 'Created table aircraft_type_groups'
+  - builder_table_create_aircraft_type_groups.php
+  - 'Created table aircraft_type_aircraft_type_group'
+  - builder_table_create_aircraft_type_aircraft_type_group.php