Antenna tower · 2026
Pine Tree MT (372736)
BIG TIMBER, MT · near Big Timber At Howard Fld (8.2 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
"Request to update existing tower height filed on prior ASN and to add frequencies. 5G C-Band transmissions from this site to comply w/ the operational parameters agreed to in collaboration w/ FAA as part of its 5G C-band compatibility evaluation. Request prior ASN frequencies be on this DNH letter."
Filing details
- Case number (ASN)
- 2026-ANM-4215-OE
- Structure
- Pine Tree MT (372736)
- Type
- Tower / antenna
- Category
- Antenna tower
- Height above ground
- 154 ft
- Height above sea level
- 4,212 ft
- Site elevation
- 4,058 ft
- Notice of
- Existing
- Duration
- Permanent
- Marking & lighting
- —
Timeline
- Filed
- June 15, 2026
- Determined
- June 25, 2026
- Determination expires
- —
Who filed it
- Sponsor
- American Towers LLC - CS
- Representative
- American Tower Corporation
Names are shown as they appear in the FAA's public record. How we handle names
Location
- Coordinates
- 45.776139, -109.814086
- Degrees / minutes / seconds
- 45°46'34.1"N 109°48'50.7"W
- County
- Sweet Grass
- 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.