Grand Coulee Dam Airport
3W7 · GCD · Electric City, WA · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 09:03 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:01 AM | 12:01Z |
| Sunrise | 05:36 AM | 12:36Z |
| Sunset | 08:28 PM | 03:28Z |
| Evening civil twilight Loggable night begins | 09:03 PM | 04:03Z |
Plan a flight from 3W7
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 21LEFT traffic
- Heading
- 216° mag · 231° true
- Dimensions
- 4,199 × 75 ft
- TPA
- 2,600 ft MSL (≈1,000 AGL) · standard
- Surface
- ASP
- CTAF
- 122.9
Enter the left downwind (heading 036°) on the 45° at 2,600 ft MSL (≈1,000 AGL).
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
| Runway | Length | Your margin |
|---|---|---|
| 03/21 | 4,199 ft |
Prefer one flat page? Full runway details for 3W7 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 3W7 kneeboard →
Comms & NavAids
Communication frequencies
Before taxi
Taxi & takeoff
Also
By procedure & sector (1 frequencies)
| Frequency | Used by |
|---|---|
| 291.6 | MARLIN RCAG (LOW) |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
EPH 112.60
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| EPH · Ephrata | VORTAC | 112.60 · 73X | High | r002° / 35.5 NM |
Prefer one flat list? All 3W7 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 3W7 / GCD
- Coordinates
- 47.9220, -119.0830
- Elevation
- 1,593 ft MSL
- Magnetic variation
- 15E
- Sectional chart
- SEATTLE
- Airport use
- Public
- Control tower
- No
- Weather station
- AWOS-3PT · 128.325 · ☎ 509-631-8955
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- SEATTLE · 122.5 · 1-800-WX-BRIEF
- NOTAM facility
- SEA
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1972/10
- Distance from city
- 2 SW
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT REIL RWY 22; PAPI RWY 22; MIRL RWY 04/22 - CTAF. on 122.9 — 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 · 5 notes
General
- GEESE & WILDLIFE INVOF RWY.
- FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
Lighting
- ACTVT REIL RWY 22; PAPI RWY 22; MIRL RWY 04/22 - CTAF.
Obstructions
- 15 FT TREE 61 FT FM THR, 73 FT LEFT & DITCH 27 FT FM THR, 91 FT RIGHT.
- BRUSH 79 FT RIGHT; SLP & BRUSH 100 FT FM THR, 99 FT LEFT.
Nearby airports
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Also nearby: 2WA6 Rice Ranch Airport (private) (5 NM) · 42WA Sheffels Ranch Airport (private) (13 NM) · 2S8 Wilbur Airport (17 NM) · 22WA Gollehon Airport (17 NM) · WT32 Hart Airport (private) (17 NM) · WA15 Coulee City Airport (private) (20 NM)
About 3W7
Grand Coulee Dam Airport (3W7 · GCD) is an airport in Electric City, WA, at 1,593 ft MSL. It has 1 runway, the longest 4,199 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 3W7, refreshed from the Aviation Weather Center and FAA NASR.
Does 3W7 have a control tower?
No. Grand Coulee Dam Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 3W7?
Grand Coulee Dam Airport has 1 runway; the longest is 4,199 ft. See the Runways section for headings, surface, and lighting.
Where is 3W7?
Grand Coulee Dam Airport is in Electric City, WA, at an elevation of 1,593 ft MSL. Coordinates: 47.9220, -119.0830.
Fly out of 3W7 often?
Save 3W7 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.
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 3W7 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.