I'm sorry that I haven't found a suitable way to upload the picture, so I can only upload it to Twitter first. My plane was capable of carrying 10 passengers and the inspector was on board, but I didn't see clearance before takeoff. You can see the plane is 2,500 meters above sea level, and the test point is almost below the plane, and I circled for a long time without getting a sign that the test had passed. My version of the game is 1.12.5, and I downloaded a lot of other mods, and I don't know if it's a version problem, a conflict between mods, or just a step that I missed.