Amendment to Class B Airspace; Detroit, MI

This action modifies the Detroit, MI, Class B airspace area to contain aircraft conducting published instrument procedures at Detroit Metropolitan Wayne County Airport (DTW), Detroit, MI, within Class B airspace. The FAA is taking this action to support containment of aircraft operations using the three existing dual Simultaneous Independent Instrument Landing System (SIILS) configurations, runways 22R/21L, runways 4L/3R and runways 27L/27R, as well as support containment of aircraft operations for triple SIILS operations to runways 4L/4R/3R and runways 21L/22L/22R. This action will enhance safety, improve the flow of air traffic, and reduce the potential for midair collisions in the DTW terminal area, while accommodating the concerns of all airspace users. Furthermore, this effort supports the FAA's national airspace redesign goal of optimizing terminal and enroute airspace areas to reduce aircraft delays and improve system capacity.