This principle aims to undo the existing practice of the airspace design process whereby route placement within a Terminal Airspace is determined either exclusively by technology or driven (sometimes exclusively) by PANS-OPS design criteria. As such, this principle requires that consideration of the airspace concept forms part of the process whereby ATM/CNS enablers are identified, and that this conceptual phase precedes the PANS-OPS design stage.
2.2.3 P.3 -STATE POLICY
P.3  WITHOUT PREJUDICE TO PRINCIPLE P.1, WHETHER AND TO WHAT EXTENT CONSIDERATION SHALL BE GIVEN TO ENVIRONMENTAL IMPACT WHEN DESIGNING A TERMINAL AIRSPACE IS TO BE DECIDED BY STATE POLICY. THIS IMPLIES REQUIREMENTS FOR -
P.3.1  STATE POLICY MAKERS AND REGULATORY AUTHORITIES TO PROVIDE GUIDELINES FOR ENVIRONMENTAL MITIGATION. 

This principle seeks to address the increasing challenge being presented to ATC and/or Airport Operators to minimise adverse Environmental impact. In many instances, these difficulties could be overcome were ANSPs to be provided with clear guidelines which have been decided by STATE policy makers at government level.
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2.2.4 P.4 -COLLABORATION
P.4  THE DESIGN OF A TERMINAL AIRSPACE SHOULD BE UNDERTAKEN IN A COLLABORATIVE MANNER. THIS IMPLIES THAT -
P.4.1  TERMINAL AIRSPACE DESIGN PROJECTS SHOULD BE UNDERTAKEN BY A MULTI-DISCIPLINARY PROJECT TEAM MADE UP OF OPERATIONAL CONTROLLERS FROM ACROSS ATC DISCIPLINES AS WELL AS A PANS-OPS DESIGN SPECIALIST. 
P.4.2  THE DESIGN TEAM SHOULD CONSULT WITH AIRSPACE USERS. 

This Principle addresses one of the major challenges identified in Chapter 1 by advocating co-operation between the different ATM disciplines and between air traffic services and users (P2.1 and P2.2) during the Terminal Airspace design process. The stage at which consultation with airspace users is undertaken should be identified by the design team e.g. airspace users tend to be involved in the design process at an early stage when the operational requirements stem from the users, and at a later stage when the operational requirements are related to ATM.
The above requirement for collaboration is not limited to the ATS and Users: it extends to all interested parties referred to in Chapter 1, and therefore include but are not limited to:
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Air Traffic Services i.e.

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ATC Planners and designers of the Terminal Airspace to be designed

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ATC Terminal Airspace Planners from adjacent Terminal Airspaces

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ATC En Route Airspace Planners

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 Aerodrome Control Planners

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 PANS-OPS designers;

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Users

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Commercial air transport operators;

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Military and civil

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General Aviation (including VFR operations and recreational flying)

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Environmental (see P.3, above)

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Airport authorities

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Regional Authorities

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Controller Associations

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Authorities responsible for safety and environmental regulations.

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2.2.5 P.5 -AIRSPACE CONTINUUM
P.5  TERMINAL AIRSPACE SHOULD BE DESIGNED, WHERE POSSIBLE, SO AS TO BE 
INTEGRATED INTO THE AIRSPACE CONTINUUM BOTH VERTICALLY AND LATERALLY 
　
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本文鏈接地址：EUROCONTROL MANUAL FOR AIRSPACE PLANNING 1(105)