ATAG Corporate brochure

Air transport safety, efficiency and growth driven by market demand
"ATM_cns will provide safe and reliable air traffic management services in
developing regions like Africa, improving safety and operational efficiencies."
André Viljoen, President & CEO, South African Airways
Traditional systems limitations Future ATM_cns concept
Air-ground communications
• voice
• time consuming routine messages
• problems of accent, pronunciation, phraseology
• one speaker at a time
• VHF voice channels saturation
Navigation
• fixed airways
• point-to-point route segments, indirect routings, sub-optimal
flight profiles and capacity limitations
• ground-based navigation aids
• line-of-site range limitations
• concentration of traffic flow at airway intersections
• ground-based navigation aids
• large amount of airspace between each aircraft
Surveillance
• ground-based separation assurance
• conflict intervention from well before until well after the point of
conflict
Airport operations
• airport movements severely restricted during low visibility
• increased risk of runway incursion
System interoperability
• "multiple skies" – unnecessarily large number of flight information
regions (FIRs)
• proliferation of air traffic control (ATC) systems and technologies
according to national and regional considerations
• varying requirements and procedures from region to region
Equipage
• sophisticated onboard equipage that is under utilised
• cockpit automation but mainly manual ATC
Performance measurement
• little transparency and large disparities in the value chain
• poor accountability for performance by monopoly service providers
Flow management
• demand/capacity balancing
• constraints based on available airport and airspace capacity
Aeronautical information and weather services
• disparate formats, standards
• information not available in real time
5
Air-ground communications
• data link, supplemented by voice
• comprehensive set of pre-determined messages
• reduced human intervention
• duplex communication
• a global integral communications network
• standardisation and easier comprehension
Navigation
• optimal 4-dimensional trajectories – efficient routes
• gate-to-gate space-based navigation for all phases of flight
• worldwide navigation coverage – flexibility
• user preferences – shorter flight times
• increased capacity – reduced delays
• reduced fuel consumption and emissions – environmental benefits
• less reliance on expensive ground-based navigation aids
• greatly reduced aircraft separation, resulting in increased capacity
Surveillance
• greater aircraft autonomy for separation assurance
• minimum disruption, aircraft quickly released after resolution
• automatic dependent surveillance (ADS)
Airport operations
• reduced separation in low visibility
• advanced surface movement tools to minimise risk
of incursion
System interoperability
• reduced number of FIRs, One Sky…global ATM
• globally harmonised, interoperable and compatible systems
• seamless operations including procedures and technologies
Equipage
• cost/benefit driven solutions driven by the airspace users
• much greater use of automation in ATC
Performance measurement
• user charges directly linked to performance and service level
agreements (SLAs)
• performance evaluated through observation, benchmarking,
comparison with global best practices
Flow management
• performance-driven capacity management
• flow control by exception
Aeronautical information and weather services
• common digital aeronautical data information
exchange model
• right information made available to the right user at
the right time