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AOP21 — Wake Turbulence Separations for Arrivals based on Static Aircraft Characteristics (S-PWS-A)

This objective represents optimisation of the ICAO wake turbulence separation classes by use of longitudinal wake turbulence static pair-wise separation minima on arrivals (S-PWS-A), applicable in all operating conditions.

S-PWS-A is the efficient aircraft type pairwise wake separation rules for final approach consisting of both the 96 x 96 aircraft type based wake separation minima (for the most common aircraft types in ECAC area) and the twenty wake category (20-CAT) based wake separation minima for arrival pairs involving all the remaining aircraft types. This allows reduction of separation minima for most aircraft pairs, enabling runway throughput increase compared to ICAO scheme, whilst maintaining acceptable levels of safety.

The S-PWS-A is applied using a separation delivery tool, where the pairwise separations will be used as input into the separation delivery tool.

S-PWS-A requires the Optimised Runway Delivery (ORD) tool to be integrated at CWP and the wind measurement or forecast on the final approach path.

This objective targets capacity constrained runways during high intensity runway operations and applies to very large, large and possibly medium airports.

NOTE: This is an "Initial" objective to provide advance notice to stakeholders. Some aspects of the objective require further validation.

NOTE FOR MILITARY AUTHORITIES: It is the responsibility of each military authority to review this Objective IN ITS ENTIRETY and address each of the SLoAs that the military authority considers RELEVANT for itself. This has to be done on top and above of the review of "MIL" SLoAs which identify actions EXCLUSIVE to military authorities.

Air Navigation Service Provider / International Organisations and Regional Bodies


Related Elements

Applicability Area(s) and Timescales

Applicability Area:
See list of airports in MP Level 3 Implementation Plan - Annexes
(Not yet defined)
Timescales From By Applicable to
IOC used for Analytics functioning only - not for implementation planning 01-01-2020
FOC used for Analytics functioning only - not for implementation planning 31-12-2030

Links to SESAR Solutions

Links to PCP ATM Sub-Functionalities

ICAO Block Modules: No associated data


Applicable legislation
Applicable ICAO Annexes and other references
Deployment Programme 2022
Operating Environments

Expected Performance Benefits

Safety maintained while increasing capacity
Increased airport capacity
Operational efficiency
Cost efficiency
  Code Title From By Related Enablers
ASP01 Install ATC tool to support static pair-wise wake separation on final approach
ASP02 Adapt ATC system (AMAN) to support static pair-wise wake separation on final approach
ASP03 Develop procedures for application of static pair-wise wake separation on final approach
ASP04 Safety Assessment
ASP05 Training
ASP06 System in use
INT01 Regulatory provisions (AMC) for static pair-wise wake separation minima
Code Dates
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Supporting Material

Title Related SLoAs

Consultation & Approval

Working Arrangement in charge
Outline description approved in
Latest objective review at expert level
Commitment Decision Body
Objective approved/endorsed in
Latest change to objective approved/endorsed in