Today, the first flight ever supported by pre-flight 4D-trajectory data exchange took place in Europe flying from Munich to Hamburg. The EUROCONTROL Network Manager (NM), Lufthansa Airline and Lufthansa Systems closely cooperated on this important milestone towards the implementation of FF-ICE (Flight and Flow Information for a Collaborative Environment) - a modern concept facilitating collaborative decision making through information sharing and 4-dimensional trajectory negotiation pre-flight. (....)