set fare classes on aircraft w/ overrides (no admin ui yet)

app/Services/AircraftService.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\Aircraft;
+use App\Models\AircraftClass;
+use Dompdf\Exception;
+
+class AircraftService extends BaseService
+{
+
+    public function create(
+        array $attributes,
+        AircraftClass $class = null
+    ) {
+
+        $repo = app('App\Repositories\AircraftRepository');
+        try {
+            $model = $repo->create($attributes);
+        } catch (Exception $e) {
+            return false;
+        }
+
+        if ($class != null) {
+            $model->class()->associate($class);
+            $model->save();
+        }
+
+        return $model;
+    }
+}