The objectives of ATS, as stated in [https://www.pilot18.com/wp-content/uploads/2017/10/Pilot18.com-ICAO-Annex-11-Air-Traffic-Services.pdf ICAO Annex 11], are to:# prevent collisions between aircraft;# prevent collisions between aircraft on the maneuvering area and obstructions on that area; note that this objective does not include the apron and ATS in general is not intended to prevent collision with terrain.# expedite and maintain an orderly flow of air traffic;# provide advice and information useful for the safe and efficient conduct of flights;# notify appropriate organizations regarding aircraft in need of search and rescue aid and assist such organizations as required.

As seen from The air traffic control (ATC) service is established to accomplish the first three objectives. While the definitionfirst and third are universally applicable to all ATC units, there the second one is a only relevant to aerodrome control units. The fourth type of ATS, objective is covered by the advisory flight information service. No specific objectives are defined for this type of service. It (FIS) and the last one is considered a temporary measure to facilitate the smoother transition from FIS to ATCalerting service.

Air Traffic Management The advisory service has no specific objectives defined. It is the aggregation of the airborne functions and ground-based functions required considered a temporary measure to ensure facilitate the safe and efficient movement of aircraft during all phases of operations to enable aircraft operators to meet their planned times of departure and arrival and adhere smoother transition from FIS to their preferred flight profiles with minimum constraints and without compromising agreed levels of safetyATC.

Air Traffic Management is the aggregation of the airborne and ground-based functions required to ensure the safe and efficient movement of aircraft during all phases of operations to enable aircraft operators to meet their planned times of departure and arrival and adhere to their preferred flight profiles with minimum constraints and without compromising agreed levels of safety. '''Air Traffic Services (ATS)''', A generic term meaning air traffic control service which includes :