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  2. Operational Improvement Steps

AO-0301 — Crosswind Reduced Separations for Arrivals

This improvement proposes a change in the current ATM procedures that enables ATC controllers to reduce separations without any support of a new ATC controller tool. The level of operational applicability and benefits will depend on local wind conditions and runway orientation. Under defined crosswind conditions the wake turbulence minima to be applied between two aircrafts, can be reduced by 0.5 Nm for arrivals.

Rationale
Recent wake turbulence validation activities show potential benefits in being able to temporarily increase runway throughput and/or absorb ground/airborne delays when considering that the wake turbulences under certain crosswind conditions are transported out of the approach flight path or that they have decayed enough because of the turbulence associated to the wind. In general the benefits will favour busy airports with large airborne delays. Airports that heavily rely on an operator's network based on transferring passengers will benefit from this procedure. The major benefits are to be achieved when a single segregated runway is used for arriving traffic and during peak periods or when airborne holding creates delays. The actual benefits are dependent mainly on local wind conditions, traffic mix (number of wake turbulence separated pairs) and traffic density. A positive benefit study was conducted for Paris CDG and London Heathrow airports.
It will provide a transitional step towards SESAR IP2 related operational improvements to be addressed by the SJU project P6.8.1 in Phase 2 - Weather Dependent Separations (WDS).
Forecast V3 end date
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Benefits start date (IOC)
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Full benefits date (FOC)
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Current Maturity Level
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Solution Data Quality Index
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Current Maturity Phase
R&D Finalised
Scope
Local
Release
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PCP Status
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Context

Related Elements
B0

Enablers

Timeline Table
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AO-0301
PRO-066a
AERODROME-ATC-30
Code Title Related Elements Analysis
PRO-066a ATC Procedures to apply new flexibility in application of wake turbulence standards
Analysis
AERODROME-ATC-30 APP/TWR workstation equipped with wind monitoring and forecast information (incl. winds up to 4000 ft.)
Analysis

Dependent OI Steps: No associated data

SESAR Solutions: No associated data

PCP Elements: No associated data

Implementation Objectives: No associated data

ICAO Block Modules

Collapse all
Designator Title Related Elements
  B0
B0-WAKE Increased Runway Throughput through Wake Turbulence Separation