Warren USFS Airport

3U1 · Warren, ID · Non-towered · Print kneeboard

Elevation

5,902 ft MSL

Longest runway

2,765 ft 11/29

Runway

Mag var

18E

CTAF 122.9

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Weather

METAR observed

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TAF forecast

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Sun & FAA night2026-08-04 · night begins 08:40 PM

Event	Local (PDT)	UTC
Morning civil twilight Loggable night ends	04:57 AM	11:57Z
Sunrise	05:31 AM	12:31Z
Sunset	08:06 PM	03:06Z
Evening civil twilight Loggable night begins	08:40 PM	03:40Z

Loggable night (§1.1)

08:40 PM → 04:57 AM

Night currency (§61.57)

09:06 PM → 04:31 AM

Plan a flight from 3U1

Destination

TAS (kt)Burn (gph)Reserve (hr)Cruise (ft)Max alt (ft)Wind from (°)Wind (kt)

Winds aloft NOAA forecast · 3,000 to 53,000 ft

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Advisories

NOTAMs

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Pilot reports

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Airspace hazards

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Runways

RWY 11LEFT traffic

Heading: 092° mag · 110° true
Dimensions: 2,765 × 50 ft
TPA: 6,900 ft MSL (≈1,000 AGL) · standard
Surface: DIRT-G
CTAF: 122.9

Enter the left downwind (heading 272°) on the 45° at 6,900 ft MSL (≈1,000 AGL).

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
11/29	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

CTAF

122.9

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

PDF ↗

Chart Supplement ↗

VFR sectional →

Airport info

Airport information

FAA LID: 3U1
Coordinates: 45.2678, -115.6831
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

Owner

U S FOREST SERVICE

324 25TH ST, OGDEN, UT

801-625-5511

Manager

PAYETTE FOREST AIR OFFICER

800 W LAKESIDE, MC CALL, ID

(208) 634-0975

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 Airport (private) (10 NM) · C48 Wilson Bar US Forest Service Airport (11 NM) · U60 Big Creek Airport (17 NM) · 24K Krassel US Forest Service Airport (18 NM) · 28ID D Bar C Airport (private) (18 NM) · U79 Chamberlain USFS Airport (21 NM)

About 3U1

Warren USFS Airport (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 Airport 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 Airport has 1 runway; the longest is 2,765 ft. See the Runways section for headings, surface, and lighting.

Where is 3U1?

Warren USFS Airport is in Warren, ID, at an elevation of 5,902 ft MSL. Coordinates: 45.2678, -115.6831.

Fly out of 3U1 often?

Save 3U1 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.

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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.