ATM - Air Traffic Management

Air Traffic Management (ATM) is the dynamic, integrated management of air traffic and airspace including Air Traffic Services (ATS), Airspace Management (ASM) and Air Traffic Flow Management (ATFM) - Safely economically and efficiently - through the provision of facilities and seamless services in collaboration with all parties and involving airborne and ground based functions.
Air Traffic Flow Management (ATFM) is a service established with the objective of contributing to a safe, orderly and expeditious flow of air traffic by ensuring that ATC capacity is utilized to the maximum extent possible, and that the traffic volume is compatible with the capacity declared by the appropriate ATS authority.
Air Traffic Services (ATS) is a generic term meaning variously Flight information services Alerting Service, Air traffic advisory service, Air Traffic Control (ATC) service (Area Control Service, Approach Control Service, Aerodrome Control Service).
Objectives of Air traffic Services:
1. Prevent collisions between aircraft;
2. Prevent collisions between aircraft on the manoeuvring area and obstructions on that area;
3. Expedite and maintain an orderly flow of air traffic;
4. Provide advice and information useful for the safe and efficient conduct of flights;
5. Notify appropriate organizations regarding aircraft in need of search and rescue aid, and assist such organizations as required.