Antenna tower · 2026
Silvies River
Seneca, OR · near Grant County Rgnl/Ogilvie Fld (19.1 mi)
What this outcome means
The FAA studied the proposal and concluded it would not be a hazard to air navigation. A no-hazard determination is not permanent — it carries an expiration date, and if the structure is not built by then the case has to be re-filed.
The proposal, in the filer's words
"Refiling ASN: 2024-ANM-1440-OE to update height. This ASN is still under review and evaluation with the FAA and has not been determined as of this application. Structure to be 105 foot AGL with an additional 4 feet for lightning rod. Also updating with Verizon frequencies."
Filing details
- Case number (ASN)
- 2026-ANM-3990-OE
- Structure
- Silvies River
- Type
- Pole / mono
- Category
- Antenna tower
- Height above ground
- 109 ft
- Height above sea level
- 5,058 ft
- Site elevation
- 4,949 ft
- Notice of
- New Construction
- Duration
- Permanent
- Marking & lighting
- —
Timeline
- Filed
- June 6, 2026
- Determined
- September 11, 2026
- Determination expires
- March 11, 2028
A determination that lapses before the structure is built has to be re-filed. The FAA does not send a reminder.
Who filed it
- Sponsor
- Horizon Tower Limiited Partnership-iii
- Representative
- Horizon Tower-iii, LLC
Names are shown as they appear in the FAA's public record. How we handle names
See every 2026 filing by Horizon Tower Limiited Partnership-iii →
Location
- Coordinates
- 44.126378, -118.978342
- Degrees / minutes / seconds
- 44°07'35.0"N 118°58'42.0"W
- County
- Grant
- Open in a map
- Google MapsOpenStreetMap
About this record
This page is a readable copy of a public record published by the FAA's Obstruction Evaluation / Airport Airspace Analysis system. It is not the official record and may lag it. For the authoritative case status, search this ASN at the FAA's OE/AAA portal. If something here is wrong, email support@idea-engine.studio and we will correct it.
Source: FAA Obstruction Evaluation / Airport Airspace Analysis (OE/AAA) public archive (oeaaa.faa.gov), data as of September 12, 2026. Compiled by LOS Analyzer (Idea Engine LLC). This is not an official FAA record or an FAA determination; the FAA's portal is authoritative. LOS Analyzer is not affiliated with or endorsed by the FAA.
Screening a structure of your own?
Check Part 77 and the tower's line of sight before you file
LOS Analyzer screens a proposed structure against FAA Part 77 surfaces and the control tower's sightline to the runway, terrain-aware, in minutes. It is a preliminary screening — not an FAA determination and not a substitute for a licensed engineering review.