8 Performance Hierarchy Initially defined in Global ATM Operational Concept Layers represent different views of the ATM system Allows tracing of performance impact Changes at lower levels impact next layer above Leads to expectations Helps understand and communicate performance case Level 1: Political and Socio-Economic Requirements Level 2: Expectations - RASP Level 3: ATM Component Functionality - RTSP Level 4: System Requirements (e.g., RNP, RCP) Level 5: Technologies (incl.
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