Comparison of the En-route Air Traffic Indicators within Zagreb Area Control Center from 2017 to 2019

Zadatak ovog rada je usporediti rutni promet Centra oblasne kontrole Zagreb od 2017. do 2019. godine preko pokazatelja. U radu je opisan zračni prostor Centra oblasne kontrole Zagreb i prostor slobodnih ruta te pokazatelji rutnog prometa. Za analizu i usporedbu prometa korišteni su podaci o stvarnom prometu koji se odnose na IFR GAT promet dobiveni preko EUROCONTOL-ovog programa NEST te su pokazatelji za usporedbu definirani podacima o broju letova kroz zračni prostor Centra oblasne kontrole Zagreb, kašnjenjima na rutama i razlozima njihovog javljanja te podacima koji se koriste za analizu unutar samog programa NEST. Pokazatelji programa NEST odnose se na prosječnu udaljenost i vrijeme preleta te na vertikalnu promjenu visine pojedinog leta. Svrha analize i usporedbe pokazatelja je praćenje razvoja i promjena zračnog prometa kroz period od tri godine zračnog prostora Centra oblasne kontrole Zagreb.The task of this paper is to compare en-route traffic of the Zagreb Area Control Centre from 2017 to 2019 through indicators. The paper describes the airspace of Zagreb Area Control Centre and free route airspace, as well as indicators of en-route traffic. For the analysis and comparison of traffic, data on actual traffic related to IFR GAT traffic obtained through EUROCONTOLs program NEST were used and indicators for comparison were defined as the number of flights through the airspace of the Zagreb Area Control Centre, route delays and reasons for delays as well as data used for analysis within the NEST program itself. Indicators of the NEST program refer to the average distance and flight time and to the vertical level change of an individual flight. The purpose of the analysis and comparison of indicators is to monitor the development and changes of air traffic over a period of three years for the Zagreb Area Control Centre airspace