Several changes and updates to various features have been done during the last weeks, and here are the highlights. For always up-to-date information and full list of all changes please see the announcement forums and the AirwaySim Changelog. Updates Increased the number of aircraft allowed to be based outside airline's HQ. The number now increases from 600 at year 2015 to reach 1000 in 2035 (previous gap was 600). Growth and change rates of these limits prior 2015 are unchanged. [effective in all game worlds] Added new messages from your "personal advisor" to the route opening/editor screen to help new users to avoid costly mistakes: Warning if trying to open a route with no or very little passenger demand. Warning when trying to open a route where the aircraft is way too large for the route. Warning if the aircraft is clearly too small for the route.    Added "Operating profit / loss" data to Airline information page's financial overview. Added "Operating profit margin" and "Net profit margin" to Income statement. "Fuel contract fees" item on all financial statements is renamed as "Fuel contract and hedge fees". Added manual page about world events: https://www.airwaysim.com/game/Manual/Others/Events/ Rules for maximum allowed daily flights per destination updated. Previous limit was 40, it has been increased to 50 / day. Fine tuned new aircraft production dynamics: The production line will close, despite of any player actions or new orders placed, if the aircraft has been out of production in real life already more than 35 years. When opening new routes system automatically pre-selects "Transport only passengers (block all cargo capacity)" if the potential cargo demand is zero. Updated the temporary slot quota mechanism at highly slot-constrained airports for fair play purposes: This functionality has been changed to ensure more fair chances for everyone to get slots at the airports that are totally slot-locked. Aircraft registration and nickname can be now changed when a/c is in long-term storage. Fixes Various bugfixes, see changelog at our website for details.