I came across this article about the Port of Seattle's plans to fix the bottleneck with international arrivals:
Looking at the airside expansion proposal, which expands the existing FIS in the South Satellite, I see it also includes another airport people mover line to the main terminal:
What is the point of another airport people mover line? Is the current loop line not sufficient? It seems pretty redundant to me...
The landside proposal would build a new FIS next to Concourse A which would be connected with flying bridge:
Having an FIS by Concourse A makes sense, they should have built one from the very beginning when the new A gates and south terminal expansion were done. However, why bother with a flying bridge from the South Satellite? Why not just reconfigure some of the Concourse A gates to connect to the FIS and have many international flights arriving in Concourse A instead of the South Satellite?
Larger aircraft, like 747s, that wouldn't fit in the gates at Concourse A, could remain in the South Satellite and use the existing FIS facility. With much of the international traffic able to move to Concourse A, the congestion problems currently faced in the South Satellite wouldn't be an issue anymore. While Sea-Tac has seen very impressive international growth, I don't see its future filled with 747s and A380s. I see most international flights using A330s, 767s, 777s, and 787s.
Does anyone know when the Port of Seattle will announce its decision of which option it will pursue?