• Provide users with available capacity efficiently.
• Avoid overloads in the European ATM network.
• Prioritize safety, even if it means delaying traffic.

• ANSPs (Air Navigation Service Providers): Manage airspace and provide capacity.
• Airspace Users: Submit and update flight plans.
• Handling Agents: Provide real-time flight status updates.
• Airspace Management Authorities: Coordinate civil and military needs.
• Airports: Ensure infrastructure readiness and coordination.

• Formerly known as CFMU.
• Central hub for managing European air traffic flow.
• Tasks include:
• Managing the ATFCM network.
• Developing strategies and route efficiency.
• Balancing demand and capacity.
• Processing flight plans (FPLs).

• Only flights within or entering the ATFM area are subject to flow restrictions.
• Flights outside this area are not regulated.

• Traffic Forecasting: Based on flight plans processed by IFPS.
• 4D Profiles: Created to predict aircraft trajectories.
• Sector Load Calculation: Determines which sectors are affected and their capacity.
• Capacity Definition: Based on simulations and operational evaluations.
• Flow Monitoring Positions (FMPs): Monitor and act on traffic predictions.

• CTOT (Calculated Take-Off Time): Issued when regulations are applied.
• ETOT (Estimated Take-Off Time): Used for traffic prediction.
• Principles:
• First come, first served.
• Delay distributed among all flights.
• Late filers are treated differently.

CTOT = EOBT + TT (Taxi Time) + Delay

• Acts as a liaison between local ATC and NMOC.
• Monitors traffic, optimizes flow, and manages ATC slots.
• Sector configurations are planned based on staffing, weather, and traffic.

Each sector has a capacity per hour.

eg : M1 is 44 FPL max which is only 75% of the max capacity in case of emergencies to handle.

Flight profile is stored in NMOC database

• Point profile : profile by waypoint
• Airspace profile : profile by sectors. Usefull to calculate demand on each sector and adjust the capacity