Applying for an ATFM exemption

Last update

Airports use specific procedures to coordinate aircraft departure slots and flight plans in order to optimise air traffic flow management (ATFM).

Nevertheless, any air operator may apply for an exemption for an air traffic flow management departure slot (ATFM departure slot) for a flight departing from Luxembourg International Airport (ELLX).

Applications must be filed with the Directorate of Civil Aviation (Direction de l’Aviation Civile – DAC).

The procedure applies to 2 types of exemptions:

  • "Single Flight" exemptions; and
  • permanent exemptions.

Who is concerned?

All operators of flights departing from Luxembourg International Airport (ELLX).


The air operator must be authorised to operate the type of flight departing from Luxembourg International Airport (ELLX) for which the exemption is being applied for.


Applications must be submitted:

  • for single flight exemptions: no later than 48 hours before the departure of the flight in question;
  • for permanent exemptions: at least 10 working days before the first scheduled flight.

For urgent medical flights or medical emergency evacuations, the application timeline can be reduced, if need be.

How to proceed

Filing an application

Applications for ATFM exemptions must be sent to the DAC by email, using the appropriate application form.

Supporting documents

"Single Flight" exemptions

The application must be accompanied by the following:

  • "DAC-NSA Form 104-1";
  • for medical flights, "DAC-NSA Form 104-2";
  • documentary proof of the nature of the flight.

Permanent exemptions

The application must be accompanied by the following:

  • "DAC-NSA Form 104-1";
  • a copy of the AOC (Air Operator Certificate), compliant with the currently applicable European regulation;
  • copies of the Certificate of Airworthiness and the Airworthiness Review Certificate for all aircraft covered by the exemption;
  • a copy of the insurance certificate.

Application processing time

"Single Flight" exemptions

If no reply is received from the DAC within 24 hours of the application, the exemption should be considered granted.

Nevertheless, the DAC undertakes to issue exemptions within 36 hours of receiving applications.

Permanent exemptions

The DAC will issue the exemption within 10 working days of receiving the application.

Duration of validity

"Single Flight" exemptions

Single-flight exemptions are granted for the flight in question only and cease to be valid when the flight lands at its destination.

Permanent exemptions

Permanent ATFM exemptions are valid for 12 months and are automatically renewable for a further 12 months.


Operators must satisfy all the conditions required by the DAC, which are set forth in the exemptions.


Should the operator repeatedly fail to satisfy the conditions set forth in the permanent exemption, the exemption will be revoked with immediate effect.

Online services and forms

Who to contact

Directorate of Civil Aviation

  • Directorate of Civil Aviation

    4, rue Lou Hemmer L-1748 Senningerberg Luxembourg
    Postbox 283 L-2012 Luxembourg
    Email address:
    Open Closes at 12.00
    8.30 to 12.00, 13.00 to 17.00
    8.30 to 12.00, 13.00 to 17.00
    8.30 to 12.00, 13.00 to 17.00
    8.30 to 12.00, 13.00 to 17.00
    8.30 to 12.00, 13.00 to 17.00

Related procedures and links


Aviation Transport of passengers, mail and/or freight by air - Operating licence


Further information

Legal references

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