diff --git a/README.md b/README.md
index 52e1c2a..5390760 100644
--- a/README.md
+++ b/README.md
@@ -1,23 +1,21 @@
 # Relations
 
-## AircraftManufacturers
+## AircraftManufacturer
 
 - HasMany AircraftType
 
-## AircraftTypes
+## AircraftType
 
-- BelongsTo AircraftManufacturers
-- **TODO** BelongsTo Typeratings (External DB)
-- HasMany Aircrafts
+- BelongsTo AircraftManufacturer
+- BelongsTo Typerating (External DB, creation in Schooling Plugin)
+- HasMany Aircraft
 
-## Aircrafts
+## Aircraft
 
-- BelongsTo AircraftTypes
-- BelongsToMany AircraftTypeGroups
-- **TODO** BelongsTo Airports (External DB, Multiple)
+- BelongsTo AircraftType
+- BelongsToMany AircraftTypeGroup
+- **TODO** BelongsTo Airport (External DB)
 
-## AircraftTypeGroups
+## AircraftTypeGroup
 
-- BelongsToMany AircraftTypes
-
----
+- BelongsToMany AircraftType
diff --git a/models/AircraftType.php b/models/AircraftType.php
index 198ae3e..2075987 100644
--- a/models/AircraftType.php
+++ b/models/AircraftType.php
@@ -25,7 +25,7 @@ class AircraftType extends Model
    * @var array Validation rules
    */
   public $rules = [
-    'aircraft_manufacturer' => 'required',
+    'aircraft_manufacturer_id' => 'required',
     'typerating_id' => 'required',
     'only_charter' => 'required',
     'type' => 'required',
@@ -52,6 +52,7 @@ class AircraftType extends Model
 
   public $belongsTo = [
     'aircraft_manufacturer' => 'GermanAirlinesVa\Fleet\Models\AircraftManufacturer',
+    'typerating' => 'GermanAirlinesVa\Schooling\Models\Typerating',
   ];
 
   public $belongsToMany = [
diff --git a/models/aircrafttype/columns.yaml b/models/aircrafttype/columns.yaml
index b3451b5..2e14455 100644
--- a/models/aircrafttype/columns.yaml
+++ b/models/aircrafttype/columns.yaml
@@ -2,12 +2,16 @@ columns:
   id:
     label: id
     type: text
-  aircraft_manufacturers_id:
-    label: aircraft_manufacturers_id
-    type: number
-  typerating_id:
-    label: typerating_id
-    type: number
+  aircraft_manufacturer:
+    label: aircraft_manufacturer
+    relation: aircraft_manufacturer
+    type: text
+    valueFrom: name
+  typerating:
+    label: typerating
+    relation: typerating
+    type: text
+    valueFrom: name
   only_charter:
     label: only_charter
     type: text
diff --git a/models/aircrafttype/fields.yaml b/models/aircrafttype/fields.yaml
index 481a11d..9adeab4 100644
--- a/models/aircrafttype/fields.yaml
+++ b/models/aircrafttype/fields.yaml
@@ -8,11 +8,13 @@ tabs:
       required: 1
       type: relation
       tab: 'germanairlinesva.fleet::lang.aircraft_types.tabs.operational'
-    typerating_id:
+    typerating:
       label: 'germanairlinesva.fleet::lang.aircraft_types.typerating_id'
+      nameFrom: name
+      descriptionFrom: description
       span: auto
       required: 1
-      type: number
+      type: relation
       tab: 'germanairlinesva.fleet::lang.aircraft_types.tabs.operational'
     only_charter:
       label: 'germanairlinesva.fleet::lang.aircraft_types.only_charter'
diff --git a/updates/builder_table_create_aircraft_manufacturers.php b/updates/builder_table_create_aircraft_manufacturers.php
index e3c4c35..1149d81 100644
--- a/updates/builder_table_create_aircraft_manufacturers.php
+++ b/updates/builder_table_create_aircraft_manufacturers.php
@@ -19,6 +19,8 @@ class BuilderTableCreateGermanAirlinesVaAircraftManufacturers extends Migration
 
   public function down()
   {
+    Schema::connection('germanairlinesva_fleet')->disableForeignKeyConstraints();
     Schema::connection('germanairlinesva_fleet')->dropIfExists('aircraft_manufacturers');
+    Schema::connection('germanairlinesva_fleet')->enableForeignKeyConstraints();
   }
 }
diff --git a/updates/builder_table_create_aircraft_types.php b/updates/builder_table_create_aircraft_types.php
index 735ba38..59b3e7c 100644
--- a/updates/builder_table_create_aircraft_types.php
+++ b/updates/builder_table_create_aircraft_types.php
@@ -17,10 +17,6 @@ class BuilderTableCreateGermanAirlinesVaAircraftTypes extends Migration
         ->references('id')
         ->on('aircraft_manufacturers');
       $table->bigInteger('typerating_id')->unsigned();
-      //$table
-      //  ->foreign('typerating_id')
-      //  ->references('id')
-      //  ->on('typeratings');
       $table->boolean('only_charter');
       $table->string('type');
       $table->text('description');