AO-0308 — Enhanced Arrival Procedures using Dual Thresholds (DT)

The Enhanced arrival procedures using Dual Thresholds (DT) is applicable to airports with at least a pair of runways (with the same glide slope, either parallel or divergent but physically dependent [CSPR] in all cases when both used for arrival operations). The DT concept, although not removing the dependency between the runways, will allow to shift further the unique touch down aiming point on one of the runways with the aim of reducing wake vortex separations (possibly leading to increased runway capacity) while reducing noise footprint in the surrounding areas of the airport (environmental benefit).
DT means establishing, on one of the runways, a further runway threshold and aiming point (permanent and unique threshold for arrivals), with corresponding glide slope and runway ground markers, lights and visual aids.
DT is a published procedure designed with a glide slope still parallel to the nominal one operated on the other runway.
Another potential benefit could be an optimization of runway occupancy time (ROT) and/or Taxi-in time.