Tank 1301535 — Seatac, WA
ConstructedFCC Antenna Structure Registration 1301535 — tank near Seatac, Washington. Antenna on a water tank or similar vessel.
At a glance
FCC Antenna Structure Registration 1301535 is a 33 m (108 ft) tank near Seatac, King County, Washington. Its registration status is constructed, with construction recorded on Jun 29, 2016. It is registered to T-Mobile West LLC, which holds 1,634 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1301535 |
| Unique system identifier | 2701230 |
| Status | Constructed (C) |
| Structure type | Tank (TANK) |
| Date constructed | Jun 29, 2016 |
| Registration issued | Feb 15, 2017 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 2016-ANM-3765-OE |
| FAA circular | — |
| Painting / lighting spec | NONE |
| Marking / lighting code | None (1) |
The painting/lighting specification is copied as filed: the FAA marking and lighting chapters and paragraphs cited in the ASR record. The marking/lighting code is decoded using the FCC registration form's code list.
Registered owner
Bellevue, WA · FRN 0002837276
Holds 1,634 FCC structure registrations — view the full portfolio →
Location
- Address
- 21420 31st Ave S (SE03007A)
- City
- Seatac
- State
- Washington
- ZIP
- 98198
- County
- King County
- County FIPS
- 53033
- Coordinates
- 47.40931, -122.29336
Within ~40 km
Nearby structures
Building with antenna · Granted (not yet constructed)
Tank · Constructed
Tower (type not specified) · Constructed
Tower (type not specified) · Terminated
Lattice tower · Constructed
Building · Constructed
How tall is structure 1301535 compared with others?
At 33 m, structure 1301535 is roughly in line with the 36 m average across the 901 structures registered in King County. It is about 22% below the Washington average of 42 m across 3,660 registrations. Among the 1,098 registrations nationwide filed under the same structure-type code (TANK), the average overall height is 43 m, so this one is about 24% below that figure.
The site's filed ground elevation is 145 m, which puts the top of the structure 177 m above mean sea level.
Where is structure 1301535, and what is registered around it?
The registration places the structure near Seatac in King County, Washington, at coordinates 47.40931, -122.29336, with the site address filed as "21420 31st Ave S (SE03007A)". 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)).
What does the status "Constructed" mean?
Constructed means the owner has notified the FCC that construction is complete, so the registry treats the structure as standing. The FCC issued registration 1301535 on Feb 15, 2017. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 2,531 in Washington.
Who owns antenna structure 1301535?
The FCC record lists T-Mobile West LLC of Bellevue, WA as the registered owner, under FCC Registration Number 0002837276. Across the registry it holds 1,634 structure registrations, the 17th-largest portfolio among the 7,865 owners with two or more, including 370 in Washington. Its most common filed structure-type code is BANT (372 registrations).
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 2016-ANM-3765-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".
Frequently asked questions
How tall is antenna structure 1301535?
Its registered overall height above ground is 33 m (108 ft), and 177 m (582 ft) above mean sea level.
Who owns tower 1301535?
The registered owner is T-Mobile West LLC, which holds 1,634 FCC antenna structure registrations.
Where is antenna structure 1301535?
It is located near Seatac, King County, Washington at 21420 31st Ave S (SE03007A) (47.40931, -122.29336). Its status is constructed; it was constructed on Jun 29, 2016.
What type of structure is 1301535?
It is filed with the FCC under structure-type code TANK, which decodes to "Tank". Antenna on a water tank or similar vessel. 1,098 registrations nationwide use the same code.
How many antenna structures are registered in King County, WA?
King County has 901 FCC-registered antenna structures, 587 of them constructed — the largest count among 38 counties in Washington.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1301535, weekly bulk file.
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 13, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structure 1301535, Seatac, King County, Washington”, https://towercensus.com/towers/washington/seatac-1301535 (data as of October 13, 2026).