Aviation Consulting & Engineering Solutions for Airports
Haritaevi offers brand registered software services to publish permissible building heights according to the airport OLS and CNS characteristics.
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Obstacle Limitation Surface Analysis


Aviation safety begins and ends at the ground. Regulating and monitoring obstacles is crucial for safe operations. Therefore, there are several limitations for human made obstacles such as buildings around airports. These limitations cannot guarantee an obstacle-free airspace by its own. Awareness of both stake holders, regulation makers, constructors and municipalities is a must.

Aviation authorities and airport operators of Turkey and the rest of the World are authorized and responsible for creating, protecting and overseeing the elevation restrictions in the obstacle plans. Access to obstacle information is an important need for people and/or organizations that aim to create plans, projects or start construction regarding the real estates around airports. Aviation information in ICAO standards can be queried online, such as where, which building functions and how many meters of building permits can be granted around the airports using ObstacleAnalyze, which also holds Technological Product Experience & Trademark Registration Certificates.

ObstacleAnalyze aims to increase safety by raising awareness about obstacle limitations on the surface and manage obstacles around airports via a single portal.

Haritaevi has extraordinary expertise in the development & deployment of Aeronautical Information Managment (AIM) software applications. To assist and enable Deep Analytics of AIM for the Turkish General Directorate of Civil Aviation (DGCA) and the Turkish Ministry of National Defense (MSB) in 2015, we designed and implemented the web portal www.obstacleanalyze.com to allow human and machine users to browse, select and visualize terrain & obstacles around an airport, and their potential Obstacle Limiting Surface (OLS) impact.

What do we have in ObstacleAnalyze ?

  • You can view and query the construction criteria for the area remaining in the airports obstacle plan,
  • You can see our aeronautical and shielding studies and query for the point you click,
  • You can upload files to our Notam and KML management tools and query for the point you click,
  • You can perform critical obstacle analysis according to the criteria you choose from your obstacle list,
  • You can view and query the CNS BRA (Building Restricted Areas) surfaces, ICAO Annex 14 OLS surfaces and ICAO Annex 15 surfaces,
  • You can add your obstacle in Aixm 5.1. format to the system individually or by clicking on the map,
  • You can add obstacles collectively from the file (.xlsx, .txt, .kml ve .csv formats) in accordance with ETOD standards,
  • You can use our obstacle management system as an individual or as a team by adding your own obstacles,
  • You can view the AIP obstacles of a specific country and use them in your analysis (Currently provided for Turkey, Romania, Latvia, Brazil, Morocco, Luxembourg, Belgium),
  • Using our surface analysis function within the scope of SID procedures, you can view the obstacles that violate the area you create.


If the location of your query via ObstacleAnalyze is within any airport Obstacle Limitation Surfaces (OLS), the ground level and building elevation permitted by ICAO standards (ICAO Annex 14 Obstacle Limitation Surface) will be calculated online. *(Please pay attention to ObstacleAnalyze coverage. Turkey -all airports-, Latvia, Malaysia, Kazakhstan, Romania, Thailand, Qatar, India, Morocco, Algeria, Oman  and Brazil -sample airports-)

Airport Obstacle Limitation Surfaces (OLS) Display

Airport OLS, Aeronautical and Shielding Studies Query Results

CNS BRA (Building Restricted Areas) Surface Profile Calculation

Obstacle Adding Screen

Surface Analysis Screen

AIP Obstacles Display Screen

More information about the software can be found at www.obstacleanalyze.com.