Turkey has a large and very important airspace with its controlled air routes off 51.950 kms and controlled airspace off 982.286 square kilometres over two continents (Europe and Asia). Due to its strategic geographical location, Turkish airspace serving as a bridge connecting Europe to Asia, far east and middle east, includes lots of crossroads with north-south and east-west traffic flows between Europe, Asia and the Middle East.


While the regulatory and policy making body in Turkey is the Directorate General of Civil Aviation (DGCA) under the Ministry of Transport, its affiliate General Directorate of State Airports Authority (DHMİ) is the sole responsible institution for the provision of Air Navigation Services throughout Turkish airspace. DHMİ is a 100 % State-owned Governmental Organization.


DHMİ has mainly two strategic focuses as follows;

• Firstly, DHMİ wants to maintain its level of service performance and strives to continuously improve the quality of its services.

• Secondly, DHMİ aims to steadily develop its efficiency in Europe and to take over a leading role in the provision of air navigation services in the region.



Air Navigation Department in the General Directorate of DHMİ is the Civil Air Navigation Service Provider for Turkey.

Air navigation services throughout Turkish Airspace are provided by means of approach control units and aerodrome control towers located at 36 relevant airports and two separate Area Control Centres located in Ankara and Istanbul Airports. Area Control Service is provided by also A. Menderes (Izmir) Approach Control Unit for the southern part of the Istanbul FIR. These Area Control Centers have taken on also the responsibility of some transition tasks in the area and arranging air traffic flow to / from Europe. DHMİ takes all measures to provide a high quality service for a safe ATM environment.

DHMİ Air Navigation Department is responsible for the following tasks:

• Air Traffic Management:
- Air Space Management
- Air Traffic Control Services
- Safety Management
- ATM occurrence investigation
-Participation in the relevant EUROCONTROL and ICAO activities / projects,
-Airspace design (Designing instrument approach, departure and landing procedures, control areas, ATS routes and ATC sectorisation)

• Aeronautical Communications Management
• Aeronautical Information Management
-Collection and distribution of aeronautical data, such as publishing, editing and amending the Turkish AIP;
-Publishing Aeronautical Information Circulars and Pre-flight bulletins;
- Preperation of aeronautical charts;
-Receiving, issuing and distributing NOTAMs

•Flight Inspection Services (Two Citation 5 aircraft serve for the approval of instrument procedures and calibration of facilities)

• The Eurocontrol Management;
-Establishment of the national cost base for oute charges taking into account all economical developments,
-Collection, validation and transmission of flight data in line with our reporting responsibilities to EUROCONTROL / CRCO
-Coordination and follow-up of financial and operational route charges related issues

• System Project Development and Assessment

DHMİ is responsible also for the training of all ATS staff and the regulation of their licencing and rating procedures, as well as manpower planning.

Moreover, DHMİ conducts customer satisfaction surveys on regular periods and consults with airspace users to ensure common understanding and to facilitate collaborative decision making.

DHMİ has the ISO 9001:2000 certificate for its Air Navigation Services since 12 July 2005. With this certificate it was documented that DHMİ meets the requirements to be appointed as the air navigation service provider in Turkish airspace. Necessary audits are carried out annually by the Turkish Standards Institution in order to ensure the compliance with the quality requirements. As a result of the internal audits made by Quality Management representatives and the external audits carried out by the cited certifying authority, Turkish Standards Institution have revealed that there were no deviations from the requirements in 2008, proved the validity and efficiency of the quality system and indicated that we were able to guarantee the best - use of our resources. This efficient use of manpower and infrastructure meant that throughout 2008 we delivered services effectively and therefore, met most of our targets.