The main goal of this work is to establish ATC operational procedures for RPAS, taking into consideration operational procedures in Riga FIR controlled airspace, aircraft technical requirements and air traffic flow intensity. Before starting this work the following tasks were set: 1) to analyze current RPAS operational procedure requirements on international, European and Latvian scale; 2) to formulate requirements for RPAS equipment according to international requirements; 3) establish formats of a notice to airman (NOTAM) message and a flight plan for RPAS use in Riga FIR; 4) to establish operational procedures for RPAS operation in Riga FIR controlled airspace; 5) to analyze air traffic intensity in Riga FIR and represent results on aeronautical chart; 6) to do mathematical modeling of air traffic intensity in Riga FIR; 7) to do forecast of air traffic intensity in Riga FIR; 8) to establish training programs for RPAS pilots and ATC officers about the use of RPAS in Riga FIR. There are five chapters in this work. In the first chapter there is analysis of international, European and Latvian legislation regarding RPAS, as well as requirements formulated for RPAS technical equipment. The second chapter considers the main factors affecting planning of aircraft’s flight route in Riga FIR, as well as there are ATC operational procedures established for RPAS use in controlled airspace of Riga FIR. The third chapter contains the analysis of air traffic flow in Riga FIR from ground to FL100 and the results are represented on aeronautical chart. The fourth chapter is devoted to mathematical modeling of air traffic flow using ARIMA mathematical model and a program “R”. The same tools are used to forecast air traffic intensity in Riga FIR. The fifth chapter contains training programs established for RPAS operators and air traffic controllers regarding RPAS. This work consists of 250 pages, contains 44 pictures, 46 tables and 72 sources of information, as well as 3 attachments on 73 pages.