Originally Posted by
WHBM
I'll have another recollection then, that there was a Thai 747 at one of the satellites, which is possibly where the immigration was. It was boarding a very substantial load. Not long after though Thai gave up Seattle and don't seem to have come back.
INS and customs facilities were and still are in S satellite which is why you'd also see military charter flights there too (as well as BA's triangular routing of LHR-YVR-SEA-LHR or v-v).
Thai had a very interesting operation at SEA in that era, which has probably been covered as a quiz item (and which I certainly have offered up as an (wrong) answer). Into the early 21st century, the legacy of this long-ceased operation was reportedly an excellent and authentic Thai restaurant in Seatac (an actual municipality) or closeby.