Airport information
- FAA LID
- S40
- Coordinates
- 46.2134, -119.7910
- Elevation
- 697 ft MSL
- Magnetic variation
- 19E
- Sectional chart
- SEATTLE
- Airport use
- Public
- Control tower
- No
- Weather station
- AWOS-1 · 121.125 · ☎ 509-786-8889
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- SEATTLE
- NOTAM facility
- SEA
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1938/12
- Distance from city
- 1 NW
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:28 AM | 11:28Z |
| Sunrise | 05:07 AM | 12:07Z |
| Sunset | 08:54 PM | 03:54Z |
| Evening civil twilight Loggable night begins | 09:33 PM | 04:33Z |
Plan a flight from S40
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT REIL RWYS 08 & 26; MIRL RWY 08/26 - CTAF. on 122.8 — 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 07 · 071°
- Pattern
- left (turns left)
- TPA
- 1,497 ft MSL · 800 AGL
- CTAF
- 122.8
Enter the left downwind for Rwy 07 at 1,497 ft MSL · 800 AGL on a 45°.
Runway 07/25
3,450 ft × 60 ft · ASP- Heading
- 071° mag · 90° true
- Heading
- 251° mag · 270° true
| Runway | Length | Your margin |
|---|---|---|
| 07/25 | 3,450 ft |
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| CTAF | 122.8 | ACTVT REIL RWYS 08 & 26; MIRL RWY 08/26 - CTAF. |
| UNICOM | 122.8 | UNICOM 122.8 0900-1700 ONLY. |
| S40 AWOS-1 | 121.125 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| PSC · Pasco | VOR-DME | 108.40 | r244° / 28.2 NM |
| YKM · Yakima | VORTAC | 116.00 | r107° / 34.5 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
- Other services
- Instruction
Ownership & management
Remarks FAA
- ESTABD PRIOR TO 15 MAY 1959.
- TWYS MKD FOR NGT OPNS WITH RETRO-REFLECTIVE DEVICES.
- FOR CD CTC SPOKANE APCH AT 509-742-2525, WHEN APCH CLSD CTC SEATTLE ARTCC AT 253-351-3694.
- AIRFIELD CONDS UNMON.
- ACTVT REIL RWYS 08 & 26; MIRL RWY 08/26 - CTAF.
- PILOTS BRING OWN ROPES.
- UNICOM 122.8 0900-1700 ONLY.
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 S40 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 S40
Prosser Airport (S40) is an airport in Prosser, WA, at 697 ft MSL. It has 1 runway, the longest 3,450 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for S40, refreshed from the Aviation Weather Center and FAA NASR.
Does S40 have a control tower?
No. Prosser Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at S40?
Prosser Airport has 1 runway; the longest is 3,450 ft. See the Runways tab for headings, surface, and lighting.
Where is S40?
Prosser Airport is in Prosser, WA, at an elevation of 697 ft MSL. Coordinates: 46.2134, -119.7910.
Fly out of S40 often?
Save S40 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.