diff --git a/app/Http/Requests/Acars/FileRequest.php b/app/Http/Requests/Acars/FileRequest.php
index 63d9f12c..0545c934 100644
--- a/app/Http/Requests/Acars/FileRequest.php
+++ b/app/Http/Requests/Acars/FileRequest.php
@@ -25,8 +25,8 @@ class FileRequest extends FormRequest
             'aircraft_id'         => 'sometimes|exists:aircraft,id',
             'flight_number'       => 'sometimes',
             'flight_type'         => 'sometimes',
-            'dpt_airport_id'      => 'sometimes|size:4',
-            'arr_airport_id'      => 'sometimes|size:4',
+            'dpt_airport_id'      => 'sometimes',
+            'arr_airport_id'      => 'sometimes',
             'route_code'          => 'sometimes',
             'route_leg'           => 'sometimes',
             'planned_distance'    => 'sometimes|numeric',
diff --git a/app/Http/Requests/Acars/PrefileRequest.php b/app/Http/Requests/Acars/PrefileRequest.php
index e69e4eb1..508732e1 100644
--- a/app/Http/Requests/Acars/PrefileRequest.php
+++ b/app/Http/Requests/Acars/PrefileRequest.php
@@ -8,15 +8,15 @@ class PrefileRequest extends FormRequest
 {
     public function rules(): array
     {
-        $rules = [
+        return [
             'airline_id'          => 'required|exists:airlines,id',
             'aircraft_id'         => 'required|exists:aircraft,id',
             'flight_id'           => 'sometimes|exists:flights,id',
             'flight_number'       => 'required',
-            'dpt_airport_id'      => 'required|size:4',
-            'arr_airport_id'      => 'required|size:4',
+            'dpt_airport_id'      => 'required',
+            'arr_airport_id'      => 'required',
             'source_name'         => 'required',
-            'alt_airport_id'      => 'sometimes|size:4',
+            'alt_airport_id'      => 'sometimes',
             'status'              => 'sometimes',
             'level'               => 'nullable|numeric',
             'flight_type'         => 'sometimes',
@@ -41,7 +41,5 @@ class PrefileRequest extends FormRequest
             'fares.*.id'    => 'required',
             'fares.*.count' => 'required|numeric',
         ];
-
-        return $rules;
     }
 }
diff --git a/app/Http/Requests/Acars/UpdateRequest.php b/app/Http/Requests/Acars/UpdateRequest.php
index 945684b2..10983fca 100644
--- a/app/Http/Requests/Acars/UpdateRequest.php
+++ b/app/Http/Requests/Acars/UpdateRequest.php
@@ -21,8 +21,8 @@ class UpdateRequest extends FormRequest
             'aircraft_id'         => 'nullable|exists:aircraft,id',
             'flight_id'           => 'sometimes|nullable|exists:flights,id',
             'flight_number'       => 'sometimes|required',
-            'dpt_airport_id'      => 'sometimes|required|size:4',
-            'arr_airport_id'      => 'sometimes|required|size:4',
+            'dpt_airport_id'      => 'sometimes|required',
+            'arr_airport_id'      => 'sometimes|required',
             'route_code'          => 'nullable',
             'route_leg'           => 'nullable',
             'distance'            => 'sometimes|numeric',
diff --git a/app/Models/Flight.php b/app/Models/Flight.php
index 4fccc4ef..58cc517c 100644
--- a/app/Models/Flight.php
+++ b/app/Models/Flight.php
@@ -93,8 +93,8 @@ class Flight extends Model
         'flight_number'  => 'required',
         'route_code'     => 'nullable',
         'route_leg'      => 'nullable',
-        'dpt_airport_id' => 'required|size:4|exists:airports,id',
-        'arr_airport_id' => 'required|size:4|exists:airports,id',
+        'dpt_airport_id' => 'required|exists:airports,id',
+        'arr_airport_id' => 'required|exists:airports,id',
         'level'          => 'nullable',
     ];