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The PHARE Advanced Planning Concept was aimed at reducing traffic complexity and was based on providing an accurate prediction of the position of all aircraft in the simulated airspace. Using information regarding trajectories together with other computer assistance tools the Planning Controller was able to plan a conflict-free trajectory for an aircraft through his sector prior to the aircraft entering the sector. The use of trajectories and trajectory prediction is fundamental to the concept of Advanced Planning.
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Advanced Planning is inextricably linked with the concept of Layered Planning under which flight planning is gradually refined and sector Planning Controllers have a more important role in eliminating planning conflicts for a sector. Conflict resolution remains an ATC responsibility.
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Further details on Multi-Sector Planning
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There are some pre-requisites for the potential of Advanced Planning to be fully exploited:
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There must be a clear sharing of tasks between the Planning Controller (PC) and Tactical Controller (TC). The TC must gain benefit from the planning activity carried out by the PC. |
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Shared planning authority for aircraft has to be introduced as this is fundamental to the Advance Planning concept. |
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The early display of incoming traffic has to be effective so that effective planning can be realised. |
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A suitable system for conflict detection has to be provided which supports the objectives of the optimisation of traffic throughput and early conflict resolution. |
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Advanced Planning can be carried out even when aircraft are not 4D FMS equipped. In the case of 3D Flight Management System (FMS) equipped aircraft a description of the trajectory was provided to the Tactical Controller as a series of timed instructions which were to be passed to the aircraft. In the case of 4D FMS and datalink equipped aircraft the trajectory can be sent directly to the aircraft.
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The Advanced Planning concept is discussed in:
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