Airport information
- FAA LID
- 25U
- Coordinates
- 45.4277, -116.6940
- Elevation
- 6,708 ft MSL
- Magnetic variation
- 18E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- MC MINNVILLE
- NOTAM facility
- MMV
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1949/11
- Distance from city
- 10 SE
Weather
METAR observed
Loading current weather…
TAF forecast
Loading forecast…
Sun & FAA night 2026-06-21
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:20 AM | 11:20Z |
| Sunrise | 04:58 AM | 11:58Z |
| Sunset | 08:39 PM | 03:39Z |
| Evening civil twilight Loggable night begins | 09:17 PM | 04:17Z |
Plan a flight from 25U
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 in the live weather panel above.
Traffic pattern
- Landing
- Rwy 17 · 174°
- Pattern
- right (turns right)
- TPA
- 7,700 ft MSL (≈1,000 AGL)
- CTAF
- 122.9
Enter the right downwind for Rwy 17 at 7,700 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 17/35
3,300 ft × 120 ft · Dirt (Fair)- Heading
- 174° mag · 192° true
- Traffic pattern
- Right
- Approach obstacle
- Trees, 15 ft, 50 ft from threshold, 0 ft B of centerline — 3:1 slope to clear · penetrates the 20:1 visual approach surface
- Heading
- 354° mag · 12° true
- Traffic pattern
- Right
- Approach obstacle
- Tree, 10 ft, 378 ft from threshold, 0 ft B of centerline — 37:1 slope to clear
| Runway | Length | Your margin |
|---|---|---|
| 17/35 | 3,300 ft |
No published frequencies or nearby navaids for 25U.
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
Ownership & management
Remarks FAA
- ESTABD PRIOR TO 1959.
- CLSD WINTERS
- EARLY SPRING: DAMP SOFT SPOT ON NORTH END OF RWY; LAND LONG TO SOUTH.
- RY 35 EXPECT DOWNDRAFTS ON SHORT FINAL DUE TO SHEER DROP IN TERRAIN.
- LIVESTOCK AND WILDLIFE ON & INVOF ARPT.
- RY 17 SLOPES UP 2.5 % TO SOUTH.
- NO LINE OF SIGHT BTN RY ENDS.
- RY 35 HAS 9 INCH BERM ALONG L SHOULDER 500 FT.
- FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
- THLD MKD BY WHITE ROCKS ACROSS RY END.
- LOOSE 3 IN - 6 IN ROCKS ON RWY; RWY FAIR DEFINED FOR GRVL TURF RWY. SOUTH 1000 FT RUF & OVERGROWN WITH WEEDS.
Nearby airports
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 25U 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.
About 25U
Memaloose Airport (25U) is an airport in Imnaha, OR, at 6,708 ft MSL. It has 1 runway, the longest 3,300 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 25U, refreshed from the Aviation Weather Center and FAA NASR.
Does 25U have a control tower?
No. Memaloose Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 25U?
Memaloose Airport has 1 runway; the longest is 3,300 ft. See the Runways tab for headings, surface, and lighting.
Where is 25U?
Memaloose Airport is in Imnaha, OR, at an elevation of 6,708 ft MSL. Coordinates: 45.4277, -116.6940.
Fly out of 25U often?
Save 25U 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.