The RECAT concept at DXB will reduce the in-trail separation of present categories of aircraft with a new category. To ensure feasibility of the concept at DXB a rigorous wake data analysis was completed in Q1, 2016. RECAT is considered to be a capacity solution when Dual Arrival Operations cannot be deployed due to climatic conditions or during peak departure times.
To ensure an early deployment of the RECAT concept a number of initiatives have been undertaken:
- 3NM live trials between Emirates Airlines heavies (Q2, 2015 – Q1, 2016)
Following an agreement between dans and Emirates Airlines, and the submission of a safety case, the UAE General Civil Aviation Authority (GCAA) approved a trial for the purpose of reducing separation between Emirates Airlines heavies from the current 4NM to 3NM on final approach. Trial results, supported by wake data analysis, indicate that deployment of 3NM separation between heavies is feasible and likely to obtain final UAE regulatory approval.
Operational analysis data indicate a throughput benefit of an additional 2 aircraft an hour.
In August 2015, dans commenced trials of RRSM-H24 (which is currently outside ICAO guidelines) to prove the safety of this operational concept during night time operations The RRSM procedure allows (under specified conditions of visibility) an aircraft to be cleared to land while a preceding aircraft (landing on or departing from the same runway) is still on the runway at more than a specified minimum distance from the threshold.
Following successful completion of trial the UAE GCAA approved RRSM H24 operations. dans is the world’s first ANSP to introduce RRSM during daylight and night operations. Identified benefits include the enabling of increased runway throughput and reduced number of “Go Around” whilst at the same time maintaining the present level of operational safety.
- Reduced Runway Separation Minima (RRSM) – Hours (H) 24 Concept
In August 2015, dans commenced trials of RRSM-H24 (which is currently outside ICAO guidelines) to prove the safety of this operational concept during night time operations The RRSM procedure allows (under specified conditions of visibility) an aircraft to be cleared to land while a preceding aircraft (landing on or departing from the same runway) is still on the runway at more than a specified minimum distance from the threshold.
Following successful completion of trial the UAE GCAA approved RRSM H24 operations. dans is the world’s first ANSP to introduce RRSM during daylight and night operations.
Identified benefits include the enabling of increased runway throughput and reduced number of “Go Around” whilst at the same time maintaining the present level of operational safety.