Last updated
September 26, 2011
Terms of use
Open use. Must provide the source. Use for commercial purposes requires permission of the data owner.


Air navigation obstacle data are data on the obstacles defined in Article 2 letter k of the Ordinance of 23 November 1994 on Aviation Infrastructure (VIL, SR 748.131.1). Air navigation obstacles are structures and installations (such as antennas, buildings, cables, cranes, cableways, power lines, wind turbines) and vegetation that can hamper, endanger or prevent the operation of aircraft or of air navigation systems. The data are gathered as part of the authorisation requirement under Article 63 a. and b. VIL, and the registration requirement under Art. 65a VIL. With the exception of vegetation, the present data set includes all permanent and temporary air navigation obstacles with a height of 25m or more outside built-up areas (or 40m or more in the case of mobile cranes), and in built-up areas, obstacles with a height of 60m or more.


Additional information

Issued date
September 26, 2011
Modified date
Bundesamt für Zivilluftfahrt
Contact points
Language independent
Further information
Landing page
Temporal coverage
Update interval
Metadata Access
API (JSON) Download XML

Got questions?

Ask the publisher directly