1) SFO no longer conducts PRM due staffing, training, reduced offset separation. They do, however so “close space parallel runway” ops. That requires 2 straight in approaches with 1nm “stagger”, heavy always trails. See
https://www.faa.gov/documentLibrary/...es_to_CSPR.pdf
2) IFR stagger, even in VMC, (vs visual “sideby”reduces arrival rate from 54 to 45.
3) the 8p-10p arrival “bank” is scheduled to the max. miles in trail sequencing for the 28R steam begins almost 1hr out with salt lake center.
4) back to note 1, even with reduced stagger at 1mi, departures off of 1L, 1R, are affected as the “gap” to launch departures is smaller, slowing ops tempo.