# Motulus.aero > High Performance Aviation Software. Find the Global Optimum. --- ## Pages - [Pairings Optimizer](https://motulus.aero/solutions/pairings-optimizer/) - [Discover more with Motulus.aero](https://motulus.aero/contact/discover-more-from-motulus-aero/) - [TA PoC](https://motulus.aero/solutions/tail-assignment/tail-assignment-contact/) - [Tail Assignment](https://motulus.aero/solutions/tail-assignment/) - [Solutions](https://motulus.aero/solutions/) - [Integrated Crew Scheduling](https://motulus.aero/solutions/integrated-crew-scheduling/) - [Network Optimization](https://motulus.aero/solutions/network-optimization/) - [Optimization as a Service](https://motulus.aero/solutions/optimization-as-a-service/) - [About us](https://motulus.aero/about-us/) - [Privacy](https://motulus.aero/privacy/) - [Home](https://motulus.aero/) - [Contact](https://motulus.aero/contact/) --- ## Posts --- ## News - [Product focus: MCrew minimize crew](https://motulus.aero/news-events/product-focus-mcrew-minimize-crew/) - [Product focus: MCrew dynamic standby blocks](https://motulus.aero/news-events/product-focus-dynamic-standby-blocks/) - [Product focus: MCrew flex assignments](https://motulus.aero/news-events/product-focus-mcrew-flex-assignments/) - [Interview in Aircraft IT Ops Journal](https://motulus.aero/news-events/interview-in-aircraft-it-ops-journal/) - [In conversation with our founders.](https://motulus.aero/news-events/in-conversation-with-our-founders/) - [System selection: best of breed or one-stop shop?](https://motulus.aero/news-events/best-of-breed-vs-one-stop-shot/) - [Interview with our CTO: Przemek](https://motulus.aero/news-events/interview-with-our-cto-przemek/) - [Flex Assignments: a module to producing the perfect roster.](https://motulus.aero/news-events/flex-assignments-a-module-to-producing-the-perfect-roster/) - [The first step to challenge traditional crew rostering](https://motulus.aero/news-events/the-first-step-to-challenge-traditional-crew-rostering/) - [Evolving analytics and reporting for planning software](https://motulus.aero/news-events/evolving-analytics-and-reporting-for-planning-software/) - [Building the business case for optimization](https://motulus.aero/news-events/building-the-business-case-for-optimization/) - [Motulus improve match officials decisions at Euro 2024](https://motulus.aero/news-events/motulus-improve-referring-decisions-at-the-euros/) - [Answering the difficult questions in crew planning](https://motulus.aero/news-events/answering-the-difficult-questions-in-crew-planning/) - [A new approach to standby planning: delivering for the Ops Control.](https://motulus.aero/news-events/a-new-approach-to-standby-planning-delivering-for-the-ops-control/) - [What's it like to work with Motulus?](https://motulus.aero/news-events/whats-it-like-to-work-with-motulus/) - [Meet the team: Mirka Bugaj](https://motulus.aero/news-events/meet-the-team-mirka-bugaj/) - [2023 in review with Motulus](https://motulus.aero/news-events/2023-in-review-with-motulus/) - [Meet the Team: Sebastian Van Thienen](https://motulus.aero/news-events/meet-the-team-sebastian-van-thienen/) - [From Takeoff to Time Off: Crafting a better Work-Life Balance in the Airline Industry](https://motulus.aero/news-events/from-takeoff-to-time-off-crafting-a-better-work-life-balance-in-the-airline-industry/) - [Meet the team: Linda Segers](https://motulus.aero/news-events/meet-the-team-linda-segers/) - [Sustainable Aero Lab graduation](https://motulus.aero/news-events/sustainable-aero-lab-graduation/) - [Motulus Aero joins Yocova as a member of the Partner Programme](https://motulus.aero/news-events/motulus-aero-joins-yocova-as-a-member-of-the-partner-programme/) - [Building the perfect schedule: what do airline schedulers really think about?](https://motulus.aero/news-events/finding-the-perfect-schedule-what-do-airline-schedulers-really-think-about/) - [An introduction to resource scheduling](https://motulus.aero/news-events/an-introduction-to-resource-scheduling/) - [The Quest for Fairness: Exploring Transparent Allocation Models for Optimal Employee Satisfaction](https://motulus.aero/news-events/the-quest-for-fairness-exploring-transparent-allocation-models-for-optimal-employee-satisfaction/) - [A day in the life of a Crew Scheduler](https://motulus.aero/news-events/a-day-in-the-life-of-a-crew-scheduler/) - [The Proof is in the Data: Real-World Results of Tail Assignment Optimization](https://motulus.aero/news-events/the-proof-is-in-the-data-real-world-results-of-tail-assignment-optimization/) - [Optimization for a Sustainable Future](https://motulus.aero/news-events/optimization-for-a-sustainable-future/) - [Behind the Scenes: A Deep Dive into Tail Assignment Optimization](https://motulus.aero/news-events/behind-the-scenes-a-deep-dive-into-tail-assignment-optimization/) - [Navigating Complexity: The Cost Model and Constraints Behind Tail Assignment Optimization](https://motulus.aero/news-events/navigating-complexity-the-cost-model-and-constraints-behind-tail-assignment-optimization/) - [Meet the team: new joiner Yannick van den Steen](https://motulus.aero/news-events/meet-the-team-new-joiner-yannick-van-den-steen/) - [Motulus to progress to their second session of the Sustainable Aero Labs programme.](https://motulus.aero/news-events/motulus-to-progress-to-their-second-session-of-the-sustainable-aero-labs-programme/) - [Meet the team: new joiner Joris Lochy](https://motulus.aero/news-events/meet-the-team-new-joiner-joris-lochy/) - [Unlocking Efficiency in Airline Scheduling with Tail Assignment Optimization](https://motulus.aero/news-events/unlocking-efficiency-in-airline-scheduling-with-tail-assignment-optimization/) - [eTT Aviation and Motulus.aero announce joint collaboration](https://motulus.aero/news-events/ett-aviation-and-motulus-aero-announce-joint-collaboration/) - [Rostering - a spotlight on the crew members perspective](https://motulus.aero/news-events/rostering-a-spotlight-on-the-crew-members-perspective/) - [Motulus selected for ground breaking sustainability in aviation programme](https://motulus.aero/news-events/motulus-selected-for-ground-breaking-sustainability-in-aviation-programme/) - [Meet the Team: Johan Andries](https://motulus.aero/news-events/meet-the-team-johan-andries/) - [The characteristics of a good scheduling system](https://motulus.aero/news-events/the-characteristics-of-a-good-scheduling-system/) - [How green is your crew planning department?](https://motulus.aero/news-events/how-green-is-your-crew-planning-department/) - [Meet the team: Michiel Wouters](https://motulus.aero/news-events/meet-the-team-michiel-wouters/) - [Airline Scheduling: a complex process in many steps](https://motulus.aero/news-events/airline-scheduling-a-complex-process-in-many-steps/) - [The benefits of proper scheduling](https://motulus.aero/news-events/the-benefits-of-proper-scheduling/) - [Trends in the airline industry](https://motulus.aero/news-events/trends-in-the-airline-industry/) - [The planners conundrum: being fair to all whilst treating crew as individuals.](https://motulus.aero/news-events/the-planners-conundrum-being-fair-to-all-and-treating-crew-as-individuals/) - [The world is back in motion in Amsterdam.](https://motulus.aero/news-events/the-world-is-back-in-motion-in-amsterdam/) - [Motulus.aero expand their team.](https://motulus.aero/news-events/motulus-ero-expand-their-team/) - [Motulus.aero to attend AGIFORS symposium 2020](https://motulus.aero/news-events/motulus-to-attend-agifors-symposium-2020/) - [A solution to the Covid-19 vaccine distribution problem](https://motulus.aero/news-events/a-solution-to-the-covid-19-vaccine-distribution-problem/) - [Six work-streams that make a planning project a success](https://motulus.aero/news-events/six-work-streams-that-make-a-planning-project-a-success/) - [The ins and outs of a planning calculation](https://motulus.aero/news-events/the-ins-and-outs-of-a-planning-calculation/) - [About optimized planning](https://motulus.aero/news-events/about-optimized-planning/) --- # # Detailed Content ## Pages Pairings Optimizer – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment Pairings Optimizer The Motulus Pairings solution generates the most efficient set of flight and cabin crew pairings to cover an airline’s flying program.   A pairing set can be generated over a flexible time horizon (for example from one week to one month) and can be used as an input to to airlines rostering process, manpower planning forecasting or to conduct what if scenarios. The pairings are generated with an aim to: Reduce airline costs: for example duty day costs, hotel costs, positioning costs, per diem costs. Generate robust pairings by creating buffers of FDP and minimising aircraft changes. Adhere to all legal and company rules, as well as applying soft rules to encourage best practice in building pairings. The Pairing Optimizer can dynamically calculate fatigue scores via an API to a recognised fatigue methodology.  The solution also has an API to get access to accurate positioning flight times and prices. Studies have demonstrated that the Motulus Pairing Optimizer competes with any pairings optimization product on the market; it has been deployed into airlines with complex operating models (multi-base, multi-haul, multi-fleet operations) with great success. Photo by Caleb Woods on Unsplash Antwerpsesteenweg 61 2660 Hoboken (Antwerpen), Belgium +32 474 54 54 83 contact@motulus.aero Home Solutions Integrated Crew Scheduling Network Optimization Optimization as a... --- Discover more with Motulus.aero – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Discover more with Motulus.aero Notice: JavaScript is required for this content. Antwerpsesteenweg 61 2660 Hoboken (Antwerpen), Belgium +32 474 54 54 83 contact@motulus.aero Home Solutions Integrated Crew Scheduling Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact © 2026 Motulus. Powered by Motulus.com Privacy Website by Moodsoup --- TA PoC – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact TA PoC Notice: JavaScript is required for this content. Antwerpsesteenweg 61 2660 Hoboken (Antwerpen), Belgium +32 474 54 54 83 contact@motulus.aero Home Solutions Integrated Crew Scheduling Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact © 2026 Motulus. Powered by Motulus.com Privacy Website by Moodsoup --- Tail Assignment – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment Tail Assignment The Motulus Tail Assignment solution allocates specific aircraft to flights: this allocation process can have a significant impact on both an airline’s operating costs and also customer service.  The tail assignment optimization solution considers fuel cost, flying and landing fees as well as other potential costs (crew and maintenance) for each aircraft in order to drive the best allocation across the schedule.  At the same time the solution will drive for an operationally robust schedule (e.g. through buffers on turnaround times) in order to create a plan that can deliver the highest on time performance possible. A recent use case for a carrier of between 50 and 60 aircraft flying a combination of short and medium haul sectors delivered an average saving of 4.1%.  This saving was a combination of landing, overflying and fuel costs.  The saving was delivered by allocating the most efficient aircraft (in terms of fuel and MTOW) to specific routes.  A series of constraints ensured all aircraft were allocated sufficient time to visit maintenance bases. Recent blogs on tail assignment: Part 1: Unlocking the Efficiency of airline scheduling with Tail Assignment Optimization Part 2: Navigating Complexity: The Cost Model and Constraints behind Tail Assignment Optimization Part 3: Behind the Scenes: A Deep Dive into Tail Assignment Optimization... --- Integrated Crew Scheduling – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment Integrated Crew Scheduling Innovations Integrated optimization Input your flight schedule and generate optimized crew member rosters in a one step process, taking into account legal regulations, crew agreements and well-being, company rules, fatigue management preferences and other constraints. Cloud based No need for on-site server infrastructure, thereby reducing IT-related costs to a minimum. Benefit from the computing power of the cloud, giving unlimited flexibility and scalability. Global optimum By avoiding a two step process, where anonymous pairings are optimized first without knowledge of the space and constraints in the rostering phase, one is able to eliminate sub-optimal solutions. Benefits Return on investment An optimizer should not be considered a cost. It will generate significant savings as from day one, improve roster robustness and crew well being. Data driven insights Generate valuable insights with our advanced roster analytics tool. Run multiple what-if scenario’s and investigate the impact of changes on the business. Personal support Rest assured, our team provides personal support & maintenance. We strive for continuous improvements. Discover all features and benefits and download our report Implementing the integrated crew scheduling solver at a European airline. Antwerpsesteenweg 61 2660 Hoboken (Antwerpen), Belgium +32 474 54 54 83 contact@motulus.aero Home Solutions Integrated Crew Scheduling Network Optimization Optimization as a Service Tail Assignment News... --- Integrated Crew Scheduling – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment Integrated Crew Scheduling Innovations Integrated optimization Input your flight schedule and generate optimized crew member rosters in a one step process, taking into account legal regulations, crew agreements and well-being, company rules, fatigue management preferences and other constraints. Cloud based No need for on-site server infrastructure, thereby reducing IT-related costs to a minimum. Benefit from the computing power of the cloud, giving unlimited flexibility and scalability. Global optimum By avoiding a two step process, where anonymous pairings are optimized first without knowledge of the space and constraints in the rostering phase, one is able to eliminate sub-optimal solutions. Benefits Return on investment An optimizer should not be considered a cost. It will generate significant savings as from day one, improve roster robustness and crew well being. Data driven insights Generate valuable insights with our advanced roster analytics tool. Run multiple what-if scenario’s and investigate the impact of changes on the business. Personal support Rest assured, our team provides personal support & maintenance. We strive for continuous improvements. Discover all features and benefits and download our report Implementing the integrated crew scheduling solver at a European airline. Antwerpsesteenweg 61 2660 Hoboken (Antwerpen), Belgium +32 474 54 54 83 contact@motulus.aero Home Solutions Integrated Crew Scheduling Network Optimization Optimization as a Service Tail Assignment News... --- Network Optimization – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment Network Optimization The planning of the route network of an airline is critical for success. It represents the core of the airline and is its most cricital success factor. Network planning requires the combination of airline experience and industry data with models for costs, yields, statistical data and more. An optimal network will maximize yields and, simultaneously, minimize costs, while safeguarding its robustness. It is a critical task because of the impact on the bottom line and should not be left to hands-on experience alone. High performance network solver The model can be formulated as a mathematical optimization problem. The motion of the crew and aircraft can be described by binary variables on a time-space graph representation. The yields and costs can be described in detail. Aircraft and passenger flows, slot restrictions, maintenance requirements and many other aspects of realistic operations can be expressed. This results in a large-scale optimization challenge that is solved by advanced graph algorithms which run on our high-performance computing infrastructure. Motulus.aero has developed proprietary algorithms that can solve these planning problems to the fine-grained details. The rapid throughput makes it possible to easily explore alternative scenarios and predict the yields and corresponding costs, while unlocking hidden synergies. Build your own scenario Yield Create a yield model that, for... --- Optimization as a Service – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment Optimization as a Service Let us help you tackle your optimization challenge with Mathematics Data Software How? Understand Intense collaboration with the partner domain experts to understand the problems, challenges and opportunities. Prove Propose a solution and develop a proof of concept with real data. Deliver Implement and deliver a customized solution. Integrate with existing systems and frameworks and provide APIs and user interface if applicable. Support Support, operate, maintain and improve the solution. Contact us with your challenge! Contact us Antwerpsesteenweg 61 2660 Hoboken (Antwerpen), Belgium +32 474 54 54 83 contact@motulus.aero Home Solutions Integrated Crew Scheduling Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact © 2026 Motulus. Powered by Motulus.com Privacy Website by Moodsoup --- About us – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact About us Motulus Aero Motulus was founded in 2015 by experts in mathematical algorithms, software engineering and high-performance computing. In 2019 we took the opportunity to bring high performance software to aviation and created Motulus Aero. Motulus.com develops advanced and proprietary optimization algorithms which are integrated by Motulus.aero in solutions that improve operational efficiency and reduce operational cost for airlines. Next to operational optimization and planning, Motulus.aero also has solutions to perform long-term and strategic planning. Research and development is state-of-the-art and is based on the most recent developments in mathematics, computer science and other scientific fields. Core team Wim Vanroose PhD in Physics Prof. Applied Mathematics Chair of the Board of Directors Benjamin Algoet MSc in Engineering CEO Przemyslaw Klosiewicz PhD in Mathematics CTO Johan Andries PhD in Physics Bram Borms MSc in Business Management Bart Partoens PhD in Physics Prof. Physics Senior Advisor Koen Ruymbeek PhD in Mathematics Software Developer Steven Rushworth MSc in Operational Research 20+ years experience in travel Business Development (Contractor) Linda Segers Bachelors in Office Management 20 years in HR & Finance Yannick van den Steen MSc in Physics Software Developer Sebastian Van Thienen MSc in Applied Mathematics Ward Van Duppen MSc in Industrial Engineering Airline Pilot Michiel Wouters PhD in Applied Mathematics Antwerpsesteenweg 61 2660 Hoboken (Antwerpen), Belgium +32 474 54 54 83 contact@motulus.aero Home Solutions Integrated Crew Scheduling... --- Privacy – Motulus.aero Solutions Integrated Crew Scheduling Pairings Optimizer Network Optimization Optimization as a Service Tail Assignment News & Events About us Contact Privacy Privacy Policy for motulus.aero At Motulus, accessible from motulus.aero, one of our main priorities is the privacy of our visitors. 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