Here are some of the highlights on the updates made to the AirwaySim software during March and late February. For always up-to-date information and full list of all changes please see the announcement forums and the AirwaySim Changelog. Updates New major feature: Airport Infrastructure Expansions. The infrastructure levels of airports will grow mainly based on the how busy the airport is but also based on other factors. The airports to be expanded are determined by a priority-based list on various factors. The highest priority is given to slot-constrained airports but also smaller airports can grow. Expansions are announced at the airport news section of Dashboard. Please read the details from the forums. Alliance score calculation renewed Alliance score is now calculated with a new and straightforward method: The total score of the alliance is the average airline score of all members participating added with the sum of 2% of all individual airline scores in the alliance, apart from the airline with the lowest score who is excluded from the average calculation (in order to allow alliances to recruit new members without big effect to their scores). There is no need for a separate scoring system since the airline score represents very well the overall quality and position of the member airlines. Check the changelog and manual for details. Airline scoring updated to include cargo statistics and other minor revisions to it too. Check the changelog for details. Airport slot costs are now relative to airport infrastructure and traffic class. New statistics: Total passenger revenue, Total cargo revenue, Fuel burn per Revenue Passenger Kilometres/Miles and Fuel burn per Revenue Freight Tn Kilometres/Miles Aircraft updates (AirwaySim Aircraft Performance Model v2): Aircraft performance data update for Embraer EMB-110 series. Aircraft performance data update for Embraer ERJ-135/140/145 series. Aircraft performance data update for Concorde. Aircraft performance data update for Dassault Mercure. Aircraft performance data update for Vickers Vanguard. Aircraft performance data update for Boeing 377 Added various conversion options for DC-8, B707, CV-340, and Caravelle. Check the changelog for details. Added combi variants for B747-100 series group. There are plenty of other smaller updates and many bugfixes too (refer to changelog for details).