This 1992 study compares three planning reports on Sea-Tac Airport's future capacity and delays: the 1988 Airspace Update Study, the 1992 Terminal Development Plan, and the 1991 Enhancement Plan. The reports differ significantly in their passenger and flight operation projections for the year 2000, and show striking discrepancies in delay estimates — with the Enhancement Plan projecting delay hours more than five times higher than the Airspace Update Study. The document also outlines proposed solutions to reduce delays, including new runway construction, airspace conflict resolution with nearby Boeing Field, and improved approach procedures.Open full document
Notes
A July 1992 comparative analysis of three studies examining Sea-Tac Airport’s passenger projections, delay estimates, and capacity planning. The document highlights significant statistical differences between the 1988 Airspace Update Study, 1992 Terminal Development Plan, and 1991 Enhancement Plan, particularly regarding annual operations forecasts and delay hour estimates. It also discusses the impact of Boeing Field airspace interactions on Sea-Tac arrival capacity and proposes both short-term and long-term delay reduction measures.