Warren /USFS/
3U1 · Warren, ID · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-18 · night begins 07:18 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:55 AM | 12:55Z |
| Sunrise | 06:25 AM | 13:25Z |
| Sunset | 06:48 PM | 01:48Z |
| Evening civil twilight Loggable night begins | 07:18 PM | 02:18Z |
Plan a flight from 3U1
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
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Runways
RWY 12LEFT traffic
- Heading
- 114° mag · 132° true
- Dimensions
- 2,765 × 50 ft
- TPA
- 6,900 ft MSL (≈1,000 AGL) · standard
- Surface
- Dirt
- CTAF
- 122.9
Enter the left downwind (heading 294°) on the 45° at 6,900 ft MSL (≈1,000 AGL).
More details — RWY 12
- Threshold elev
- 5,869 ft
- Approach obstacle
- Trees, 15 ft, 40 ft from threshold, 0 ft B of centerline — 2:1 slope to clear · penetrates the 20:1 visual approach surface
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 12/30 | 2,765 ft |
Prefer one flat page? Full runway details for 3U1 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 3U1 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
DNJ 116.20
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| DNJ · Donnelly | VOR/DME | 116.20 · 109X | High | r017° / 37.4 NM |
Prefer one flat list? All 3U1 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 3U1
- Coordinates
- 45.2681, -115.6836
- Elevation
- 5,902 ft MSL
- Magnetic variation
- 18E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- BOISE · 122.6 · 1-800-WX-BRIEF
- NOTAM facility
- BOI
- Attendance
- UNATNDD
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1947/08
- Distance from city
- 0 NW
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
Ownership & management 2 contacts
Remarks FAA · 14 notes
General
- RECOMMENDED USE EARLY MORNING & LATE EVENING IN SUMMER. NOT RECOMMENDED FOR INEXPERIENCED PILOTS.
- NO WINTER MAINTENANCE.
- DWNDFTS PREVALENT RWY 12 SUMMER MONTHS.
- NO TELEPHONE AVBL AT ARPT.
- ROAD CROSSES RY APRXLY 800 FT FM RY 12 THLD.
- RWY 12 +4 FT DREDGE TAILINGS 0 FT, 65 FT R; +4 FT DREDGE TAILINGS 350 FT ON CNTRLN; +70 FT TREES AT 600 FT ON CTRLN; +200 FT RDG AT 1000 FT ON CNTRLN.
- RWY 30 +25 FT BLDG AT 70 FT, 85 FT L; +10 FT BLDG AT 130 FT, 70 FT L; +10 FT PVT ROAD AT 130 FT, 35 FT L; +5 FT LOG FENCE AT 100 FT, 25 FT L.
- DO NOT USE ADJACENT PVT ROAD SW OF RWY FOR TAKE OFF OR LANDING.
- FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
Runways
- RCMD LND RWY 12 & TKOF RWY 30 WHEN WND CONDS ALLOW.
- RWY 12 THR MKD WITH NON-STD W ROCK BDRY MKRS.
- RWY 30 THLD POORLY DEFINED.
- HAS SOME LOOSE ROCKS TO 2 INCHES IN DIAM; ISOLATED SPOTS OF EMBEDDED FLAT ROCKS TO 6 INCHES IN DIAM; AND SOME SPOTTY WEED GROWTH TO 12 INCHES.
Obstructions
- 15 FT ROAD AT O FT, 60 FT RIGHT - MAIN ACES ROAD INTO WARREN.
Nearby airports
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Also nearby: ID28 Mackay Bar (private) (10 NM) · C48 Wilson Bar USFS (11 NM) · A05 Dixie USFS (17 NM) · U60 Big Creek (17 NM) · 24K Krassel USFS (18 NM) · 28ID D Bar C (private) (18 NM)
About 3U1
Warren /USFS/ (3U1) is an airport in Warren, ID, at 5,902 ft MSL. It has 1 runway, the longest 2,765 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 3U1, refreshed from the Aviation Weather Center and FAA NASR.
Does 3U1 have a control tower?
No. Warren /USFS/ is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 3U1?
Warren /USFS/ has 1 runway; the longest is 2,765 ft. See the Runways section for headings, surface, and lighting.
Where is 3U1?
Warren /USFS/ is in Warren, ID, at an elevation of 5,902 ft MSL. Coordinates: 45.2681, -115.6836.
More about 3U1
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 3U1 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
Something here wrong or out of date? Report a data problem.