Building 1031435 — Seatac, WA

At 16 m, structure 1031435 is about 44% of the 36 m average across the 901 structures registered in King County. It is about 37% of the Washington average of 42 m across 3,660 registrations. Among the 1,817 registrations nationwide filed under the same structure-type code (B), the average overall height is 42 m, so this one is about 37% of that figure.

The site's filed ground elevation is 125 m, which puts the top of the structure 141 m above mean sea level.

The registration places the structure near Seatac in King County, Washington, at coordinates 47.47222, -122.30333, with the site address filed as "BLDG 22-01 24TH S BTWN S142 & 146". King County has 901 FCC-registered antenna structures, the largest count among the 38 Washington counties with registrations, and 587 of them are marked constructed. Washington as a whole has 3,660 registrations, the 26th-largest total among the 50 states and DC.

The tallest other registered structure within about 40 km is Seattle, WA · 1314042, a building antenna at 288 m (granted (not yet constructed)).

Constructed means the owner has notified the FCC that construction is complete, so the registry treats the structure as standing. The FCC issued registration 1031435 on Apr 14, 2025. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 2,531 in Washington.

The FCC record lists The Boeing Company of Seattle, WA as the registered owner, under FCC Registration Number 0001583483. Across the registry it holds 155 structure registrations, the 139th-largest portfolio among the 7,865 owners with two or more, including 104 in Washington. Its most common filed structure-type code is BTWR (57 registrations).

The registration cites FAA aeronautical study 93-ANM-0653-OE, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 1, is listed on the FCC registration form as "None".