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AO-0323 — Wake Turbulence Separations (for Departures) based on Static Aircraft Characteristics

Optimization of the ICAO wake turbulence separation classes by use of longitudinal wake turbulence static pair-wise separation (S-PWS) minima on departures for the initial common departure path from the runway, applicable in all operating conditions. The specification is based on the comparison of wake generation and wake resistance between aircraft types, to reference pairs considered as acceptable baseline for wake turbulence risk, and using aircraft type characteristics. 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 demand is high for airport capacity and efficiency at some European airports, and in particular for increased runway throughput.
Today's ICAO separations are based on certificated Maximum Take Off Mass (MTOM) and it includes three categories (i.e. HEAVY, MEDIUM or LIGHT) allocating all aircraft into one of them. Because the separations are defined based on the worst case in each category, this leads to over separation in many instances resulting in and a loss of runway throughput. Using knowledge gained with RECAT-EU development and refined analysis supported additional operational data, further optimization is possible.
Forecast V3 end date
Benefits start date (IOC)
Full benefits date (FOC)
Current Maturity Level
V2 finalised
Solution Data Quality Index
Current Maturity Phase
PCP Status



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Dependent OI Steps

Relationship Code Title Related Elements
Has predecessor AO-0329 Optimised Separation Delivery for Departure
Has successor AO-0324 Wake Turbulence separations (for departures) based on Dynamic Aircraft Characteristics

SESAR Solutions

PCP Elements: No associated data

Implementation Objectives: No associated data