All together now 2024

All together now 2024

All together now 2024

Don't just think local, think Network!

The EUROCONTROL Network Manager's guidance document "All Together Now 2024" gives flight dispatchers, pilots, air traffic controllers, flow management positions and airports a clear overview on the processes they should follow to ensure efficient, optimal operations. The DO's and DON'Ts are marked clearly in the document.







What we ask dispatchers

Flight Planning – H24 phone
+32 (0) 2 745 1950

Use IFPS Validation tools in the NOP Portal/CHMI/NMP Flight to test your Flight Plans before sending it to IFPS.

Please prioritise the on time departure of the first rotation - It makes a significant contribution to the success of the last rotation!

File reliable Flight Plans

  • Airport Arrival Slot
  • Cruise flight levels (RFL)
  • Taxi-times

YO-YO vertical profiles

Avoid YO-YO vertical profiles in Flight Plans attempting to avoid ATFM regulation. You risk causing a traffic overload in lower radar sector or a new ATFM measure (which you will be subject to).

Keep EOBT updated

Do not be afraid of a new, worse, slot. If that happens, wait 10 mins to see if it settles, and if not, use e-Helpdesk.

Avoid sharp angles turns if unable to find direct route… instead ask NMOC IFPS to help you finding the best possible RAD compliant alternative route.

  • Use the e-Helpdesk for delay improvement.
  • The Flight Activation Monitoring (FAM) parameter is 17 min
  • Do not let your flight get suspended by the NM system!
  • When filing the flight plan take into account the RRPs sent by NMOC (AOLOs) for weather impact mitigation
  • Use NMP Flight to identify Flight Plans filed containing YO-YOs or Sharp Turns
  • Do not file a flight plan to operate outside the coordinated Airport Slot at DEST
  • Do not submit to e-Helpdesk multiple requests for the same flight
  • Do not send improvement requests to E-Helpdesk more than 2 hours before EOBT

AOLO Hotline

Call the AOLO hotline only for flights needing special assistance.

More info

Critical flights

Flights can be declared as CRITICAL in the e-Helpdesk and in NMP Flight.

More info

SLOT Swapping

Slot Swapping may be requested via the following communication channels.

More info

Use NMP Flight

NMP Flight is the new EUROCONTROL Network Manager external interface for Airspace Users.

More info

What we ask
pilots (Airlines/GA/BA)

  • Fly what you file!
  • Always keeping safety paramount. Maintain route/vertical profile as per Flight Plan, unless a deviation is dictated by reasons of safety, WX phenomena, by ATC or by technical reason
  • Ask TWR for start up in line with EOBT, Taxi-time and any CTOT / TOBT
  • Respect the ETA at destination airport and sector entry times (Target Times in SAM SRM messages)
  • File Flight Plan as early as possible possibly not later than 4 hours before EOBT
  • Ensure your EOBT is kept up to date
  • Do not ask for direct routes with ATC, time volatility changes entry time and traffic  counts (predictability) in downstream ATC sector loadings, and at the arrival airport, and the ATCO in your current sector will not be able to see the effects downstream!
  • There are established methods of making  a flight critical to gain reduced delay – see Dispatchers Section – and in the field, ask your OCC to help
  • Do not call NMOC e-Helpdesk from cockpit, ask your OCC to do it (unless you are at same time dispatcher, handling, pilot), as your OCC is the official coordinator for your Company
  • BEWARE: Changes to your filed plan when operating cause unpredictability downstream

What we ask
ATCOs (tower)

  • Always RESPECT the CTOT slot tolerance window
  • If the flight is ready to go before the departure slot, send REA message to NMOC
  • Use the standalone NMP Flow for TWRs over the internet to use the new flight list which includes e-Helpdesk and MIRROR.
  • A-CDM TWRs do not request STW/DTW for all deps, let us work on specific flights. The application of STW/DTW deteriorates predictability in downstream en-route sectors
  • If a CTOT is expiring, do not wait until last minute: contact your FMP or NMOC to obtain a CTOT extension, as per your local procedure + NMP Flow
  • Never let a flight depart outside the CTOT slot tolerance window! Contact your FMP or NMOC to obtain a CTOT extension, as per your local procedure + NMP Flow

What we ask

Do not deviate the flight from the vertical/lateral profile as filed in the Flight Plan, unless dictated by weather, safety or other technical reason.
  • Check the final requested flight level in Flight Plan
  • Ask pilots to confirm able for filed Flight Level
  • Do not give shortcuts, unless dictated by ATC reasons. They cause time volatility and loss of predictability in a radar sector downstream, or at destination airport
  • Do not propose flight level changes, unless dictated by ATC reasons, or if you know the impact downstream

What we ask

  • Timely application of ATFCM measure is vital


  • To give AOs sufficient time to reroute to avoid high delays
  • To achieve best possible results in balancing demand & capacity, reducing overall delays


  • Pre-tactically D-1, or:
  • At least two hours before regulation start time, and this lead time should increase according to the average flying time to the reference location of the regulation.
  • Prioritise First Rotation:
  • Analyse and request to NMOC to improve / exclude flights whenever possible
  • Optimise delays, improve predictability and reduce volatility in the network by using a pre-tact regulation for first rotation
  • Pre-tactical Measures should cover the early morning demand capacity balancing (DCB) periodn
  • Coordinate with NMOC:
  • NMOC staff have the Network overall view, so co-ordinate to resolve a demand capacity balancing (DCB) issue to prevent unnecessary regulations
  • Use B2B connection, NMP Flow and NOP Portal for ATFM regulation request
  • Use the e-Help Desk connection with NMOC via NMP Flow to ask for slot extensions, slot improvements or an EXCLUSION from the ATFCM measure. This will reduce the response time versus telephone as your queries will be differentiated from AOs requests
  • Use supplementary rate to increase the rate of a regulation instead of changing the initial rate of the regulation. A supplementary rate induces a shallow rectification and only improved flights will get a slot revision. This will help control risk of volatility. Provide NMOC with up to date sector configurations and capacities D-1 and tactical day.
  • Do not use ETFMS to test effects of ATFM regulations - Use the NMP Flow Simulation functionality or TACT SIMEX, B2B and NMP Flow instead! Using the live system to see what will happen creates unnecessary volatility in the Network
  • Do not just propose NMOC your solution (ATFM measure) to resolve an overload or a demand peak, but rather tell NMOC what the problem is; your solution may negatively impact other sectors in other ACCs.
  • Do not ask for an ATFM measure if your sector configuration has not been updated correctly in ETFMS, i.e. the actual sector configuration must be active
  • Do not wait last minute to ask for an ATFM measure due to weather, you may not capture all the concerned flights, risking an over-delivery
  • Do not simply cancel high delay regulations – increase the rate to step out of the regulation entirely – this will ensure a smoother transition
  • By applying regulations at the last minute you will cause volatility in the Network – apply at least 120 minutes before the problem
  • Make changes to existing regulations – as this causes increased volatility
  • Use the live system to simulate effects of regulations
  • Don’t wait until the last minute! When the situation requires it, or major changes of the plan are needed (staffing issues, major traffic shifts, unplanned events etc), tell us in advance.

For a comprehensive list of DO's and Don'ts and further information – also on the Cross-Border Weather Procedure – please consult the All Together Now 2024 guide.

ATFM Measures NMP Flow app

If your ANSP/FMP is NOT connected B2B with the NMOC, you can still coordinate/ask/modify ATFM measures via the new NMP FLOW APP or the NOP Portal application (in CIFLO), so expediting the coordination and avoiding the phone call to NMOC Flow staff.

Request Token upgrade trough NM customer support, and our staff will guide you through the whole process. We strongly suggest to follow the “Introduction to NMP Flow training” via the EUROCONTROL's Learning Zone.

What we ask

  • A-CDM airports: Operate within agreed data updates and procedures and keep the A-CDM tool up to date at all times.
  • Keep your plans updated in Airport Corner ref changes to planned/unplanned events at D-1 and day of operations. The Airport Corner proves that it is useful to have the info from airports especially when capacity is impacted.
  • Ensure EOBTs are up to date and challenge when they are unachievable
  • Highlight early any reactionary delays and delays due adverse conditions
  • Co-ordinate with the Airport Function both in pre-tactical and tactical phase

Contact us

Inform us of any possible expected event/issue that might have an impact on airport capacity and trigger ATFM delay.

NM Airport Unit (prior the day of operations)
[email protected]

NMOC Airport Function (day of operations)
Phone +32-2-7291190

NMOC info


All together now 2024

This practical guide helps operational stakeholders to best optimise their air traffic and support the efficient functioning of the Network as a whole. The PDF contains further details.

All together now 2024