The previously previewed airport noise regulation rules are now being implemented in all game worlds (apart from the current Game World #3, ending in less than two weeks). This new feature adds the aircraft noise limitations to airports disallowing operations with very old/noisy aircraft to some airports. The limitation rules follow the real-life restrictions and for example Europe and US require a "Chapter 3" noise certified aircraft during the modern era.

The feature is now fully live, but is not enforced yet. This means that all relevant updates to news and airport data is being made, but players will not YET receive any warnings if they are in violation with the noise regulation rules. The full implementation will happen next week, and then the routes in violation of the noise rules will be unscheduled by the system.

A manual page with the highlights is also added: http://www.airwaysim.com/game/Manual/Routes/Noise/