Opinion request

All assessments by the Urbanism service of skeyes can only be carried out if the required forms below have been duly completed and attached to the complete application file submitted to the competent authority (see below).

The corresponding form shall include the following information:

• a ground plan (preferably on a scale of 1/10 000) mentioning the coordinates in the Lambert system or in WGS-84;
• The elevation of the terrain in meters relative to TAW (or AMSL);
• The construction dimensions in meters and the height above ground level in meters AGL;
• an image of the construction clearly revealing its structure;
• a description of the materials used;
• the period during which the works are planned to take place;
• the frequencies used for the transmitting equipment.

Where to address your request for opinion

Opinion request workflow and routing process

Buildings and permanent constructions

Official permits for buildings and permanent constructions need to submitted by the applicant to the competent region depending on the location of the building or permanent construction (Flanders, Wallonia or Brussels).

The regional authority will request an opinion via BCAA (Belgian Civil Aviation Authority).

Applicants are not supposed to send their permit request directly to skeyes.

Cranes and temporary installations

Temporary installations (including cranes, scaffolding, or transmission equipment) not subject to prior authorisation, when located in the immediate vicinity of airports managed by skeyes or near skeyes installations, shall be subject to assessment by the Urbanism service.

• The applicant shall send his request directly to skeyes (urba@skeyes.be).

Windturbines

Wind turbines typically exceed the height thresholds indicated on the Aeronautical Obstacle Evaluation Map (AOEM).

This consequently triggers a federal aeronautical obstacle assessment procedure:

• To be submitted to BCAA obstacle service (obstacles@mobilit.fgov.be)

Opinion request forms

For wind turbines:

• Download the form for an opinion request on wind turbines.
• Download the Excel file ‘Aviator coordinates’.

For buildings and other permanent constructions:

• Download the form for an opinion request on buildings and other permanent constructions (except wind turbines).

For cranes and other temporary installations:

Please note that it is mandatory to submit applications at least one month in advance to allow for proper processing for cranes and other temporary installations.

• Download the form for an opinion request on cranes and other temporary installations.

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