The Directorate of Civil Aviation (Direction de l'Aviation Civile – DAC) is the competent authority for:
Applications for obstacles to air navigation must be submitted by:
The completed application must be filed at least 15 working days before the date on which the obstacle is to be assembled or built.
For wind turbines or objects higher than 614 MAMSL (metres above mean sea level), applications must be filed 3 months in advance.
The processing of the application is free of charge for the applicant.
However, if more detailed studies are required, the costs of these additional studies are borne by the applicant.
Obstacle limitation surfaces (OLS) are surfaces that are established to protect the take-off and landing manoeuvres of aircraft arriving at and departing from the aerodrome.
The following aerodromes are located in Luxembourg:
The OLS of the different aerodromes are shown on the map at http://g-o.lu/3/B74o.
All new objects and all height extensions to existing objects in the OLS that exceed the reference point for aerodromes must be analysed by the DAC.
The elevations of the reference points of the different aerodromes are:
This applies to objects outside the OLS that, due to their nature, height and location, may present a risk for in-flight aircraft.
There are 2 situations that must be differentiated:
When objects are deemed to present a risk, a beacon and/or markings may be requested. However, if, within a 600 metre radius of the object, there are other, higher obstacles with beacons or markings, no beacons or markings are necessary if the DAC finds the protection to be satisfactory.
The applicant must duly complete form DAC-ADM410 and send it to the DAC by email or post.
The applicant must provide:
For objects covering large surfaces – such as buildings, as opposed to essentially vertical objects, such as antennae or wind turbines – the applicant must attach a map with:
The decision is valid for an open-ended period provided that the key components of the application – location, height, nature of the object – do not change in the course of the project.
For the construction and/or assembly of objects, cranes are often required. These cranes are often considerably taller than the object under construction.
As a result, a separate application must be filed for these cranes.