Level 4 Collaborative Decision Making

Level 4 CDM (Collaborative Decision Making) was based on a net-centric approach in which the business/mission trajectory was used as the common element to integrate airports into the ATM network. It introduced the idea of collaborative prioritisation of the trajectories, based on their economic value, as a factor to influence decision making along agreed principles and practices. The L4CDM concept was process-based with service-oriented solutions, supporting integrated airport and network planning and the inclusion of new partners on what is traditionally referred to as the "landside" of an airport.

In order to eliminate fragmentation and artificial divisions that do not add value to the concept, L4CDM considered two main processes, namely aircraft turn-round and passenger flow without recognising a split into airside and landside. It then defined the A-CDM services that are applied to the processes at the required place and time. The services provided for the interaction with the two main processes. Partners relied on their end-user applications to manipulate the processes as necessary.

Within the project Slot Consulting examined all stakeholders from economic and environmental aspects and revealed the benefits that can be gained from the L4 CDM concept.

Are you still intrested in our projects? Read more about our references!
Airport 2050+

The FP7 project Airport 2050+ explores radical and novel solutions to prepare airports for the year 2050 and beyond.... Read more...

CDM Courses

Slot Consulting had a pleasure to deliver the Collaborative Decision Making Courses on request of the International Air Transport Association (IATA).... Read more...


THENA- THEmatic Network on Airports - was a research and development network focusing on airports. THENA had the following objectives:... Read more...


The scope of TITAN encompass the processes included in the turnaround as well as those external services, which have a direct influence on it. Therefore, an extended handling view is ensured by including processes hitherto not, or not fully, considered in the Collaborative Decision Making view.... Read more...