Notice: If you are running Prepar3D v5, we are aware of issues with Dynamic Lighting. This was caused by drastic changes made by the Prepar3D development. We're working on issuing a fix. Thanks for your patience. Please avoid sending a new email regarding this issue, we're already aware of it. All other Dynamic Lighting issues: If you're missing dynamic lighting, please make sure the option for that particular airport is turned on. Then head over to your Prepar3D settings and verify that Dynamic Lighting is turned on in your graphics options.