Proposed San Francisco Class B airspace changes would enable lower-angle descents into SFO optimized for the higher glide ratios of modern jet aircraft, reducing noise and fuel consumption. "A low thrust descent in a clean configuration results in the smallest noise footprint [regardless of altitude], and a descent in a clean configuration at near idle thrust results in lower fuel burn" says Rick Cote, an ATC Specialist with Northern California TRACON (NCT).
This is a companion discussion topic for the original entry at https://www.avweb.com/avionics/san-francisco-class-b-airspace-changes-proposed