Tristan Heliport Seaplane BasePrivate
WA03 · Sumas, WA · 48 ft elevation · var 21E · Non-towered
Airport information
- FAA LID
- WA03
- Coordinates
- 48.9875, -122.2881
- Elevation
- 48 ft MSL
- Magnetic variation
- 21E
- Sectional chart
- SEATTLE
- Airport use
- Private
- Control tower
- No
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- SEATTLE · 122.5 · 1-800-WX-BRIEF
- NOTAM facility
- SEA
- Attendance
- UNATNDD
- Segmented circle
- No
- Activated
- 1965/02
- Distance from city
- 0 SW
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-23
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:22 AM | 11:22Z |
| Sunrise | 05:05 AM | 12:05Z |
| Sunset | 09:17 PM | 04:17Z |
| Evening civil twilight Loggable night begins | 10:00 PM | 05:00Z |
Plan a flight from WA03
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 128.25 — 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.
Runway H1/
45 ft × 45 ft · TURF- Heading
- n/a
- Heading
- n/a
| Runway | Length | Your margin |
|---|---|---|
| H1/ | 45 ft |
Communication frequencies
Tower & ground
| CTAF | 128.25 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| HUH · Whatcom | VORTAC | 113.00 | r057° / 11.7 NM |
VFR sectional
No published instrument procedures or Chart Supplement for WA03. VFR sectional link above.
Services
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
Ownership & management
Remarks FAA
General
- BOATS IN LANDING AREAS AND IN DOCKING AREA.
- CALL AHD FOR MOORAGE AND LANDING INSTRN, 800-586-3590.
- CALL AHD TO MAKE CUST APNTMT, 360-378-2080.
- APCH/DEP SVC PRVDD BY VICTORIA TRML ON 132.7/290.8. (604) 586-4560.
- ARPT CHANGED TO PRI USE PER NRA CASE ASN: 2026-ANM-517-NRA.
Runways
- VFR OPS ONLY.
- VFR OPS ONLY.
- VFR OPS ONLY.
- VFR OPS ONLY.
Contact
- DIRECT LINE: 800-586-3590.
- OTR CTC: TROY@ROCHEHARBOR.COM
- OTR CTC: TROY@ROCHEHARBOR.COM
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 WA03 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 WA03
Tristan Heliport (WA03) is a seaplane base in Sumas, WA, at 48 ft MSL. It has 1 runway, the longest 45 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for WA03, refreshed from the Aviation Weather Center and FAA NASR.
Does WA03 have a control tower?
No. Tristan Heliport is a non-towered (pilot-controlled) seaplane base; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at WA03?
Tristan Heliport has 1 runway; the longest is 45 ft. See the Runways tab for headings, surface, and lighting.
Where is WA03?
Tristan Heliport is in Sumas, WA, at an elevation of 48 ft MSL. Coordinates: 48.9875, -122.2881.
Fly out of WA03 often?
Save WA03 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.