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K4S9AIRPORT

Portland Mulino Airport

Portland-Mulino, Oregon

VFR1 Active NOTAMUpdated 2h ago260 ft MSL

1

Runway

2

Frequencies

0

Procedures

1

NOTAM

Quick Facts

ICAO

K4S9

FAA

4S9

Elevation

260 ft MSL

Runways

1

Frequencies

2

Tower

No

Fuel

N/A

Coordinates

45.216, -122.590

Airport Information

Facility Type

AIRPORT

Elevation

260 ft MSL

Control Tower

No

Fuel Types

None listed

Coordinates

45.2163, -122.5900

Current Weather

SPECI KUAO 131930Z 23007KT 10SM SCT029 BKN036 OVC045 13/09 A3013 RMK AO2 RAB19E28 P0000 T01330094

Flight Category

VFR

Wind

230° at 7 kt

Visibility

10+ SM

Temperature

13.3°C

Dewpoint

9.4°C

Altimeter

1020.40 inHg

Cloud Cover

OVC

Nearest weather from KUAO (11 NM away)

Observed 2026-05-13 19:30Z

Nearby Weather Cameras

No camera at K4S9. Showing nearest cameras.

Weather camera at Cooper facing North
Live

Cooper

North · Camera 1 · 2 cameras total

22 NM away

Weather camera at McCully Mtn facing East
Live

McCully Mtn

East · Camera 2 · 4 cameras total

27 NM away

10 camera angles available

See all cameras, directions, and nearby airport cameras

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Source: FAA faa-weather-camera

Runways

IDLengthWidthSurfaceLights
14/323,425 ft100 ftASP-

Frequencies

CLD (1)UNIC (1)
TypeFrequencyName
CLD119.95CLD
UNIC123.05CTAF/UNICOM

Active NOTAMs

1 ActiveDOM: 1

4S9 26/103

2026-05-13 14:45 2026-05-14 23:00

Nearby Airports in Oregon

K4S9 Operational Overview

Location & Facility

Portland Mulino Airport (K4S9) is a airport located in Portland-Mulino, Oregon, United States. The field sits at an elevation of 260 feet above mean sea level (MSL) at coordinates 45.2163°N, 122.5900°W.

Runways

Portland Mulino Airport has 1 runway. The longest runway (14/32) measures 3,425 feet by 100 feet with a asp surface.

Communications & Operations

Portland Mulino Airport is a non-towered (pilot-controlled) field. A total of 2 communication frequencies are published for this facility.

Weather Cameras

3 FAA Weather Cameras are available near Portland Mulino Airport, providing real-time visual weather conditions updated every 10 minutes. AeroCopilot integrates these cameras with AI-powered weather analysis to help pilots assess visibility and ceiling conditions before departure.

Current Conditions

The current flight category at Portland Mulino Airport is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations. There is currently 1 active NOTAM for this facility.

Frequently Asked Questions

What is K4S9?

K4S9 is the ICAO identifier for Portland Mulino Airport, a public-use airport located in Portland-Mulino, Oregon, United States.

How many runways does Portland Mulino Airport have?

Portland Mulino Airport (K4S9) has 1 runway. See the runway table above for dimensions and surface types.

What is the elevation of K4S9?

The field elevation of Portland Mulino Airport is 260 feet above mean sea level (MSL).

Is fuel available at K4S9?

No fuel types are currently listed for Portland Mulino Airport. Contact the FBO directly for availability.

What are the current weather conditions at K4S9?

The current flight category at Portland Mulino Airport is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.

Are there active NOTAMs at K4S9?

There are currently 1 active NOTAM for Portland Mulino Airport. Sign up for AeroCopilot to read decoded NOTAM text and AI interpretations.

How do I access complete data for K4S9?

Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for Portland Mulino Airport.

Where is Portland Mulino Airport located?

Portland Mulino Airport (K4S9) is located in Portland-Mulino, Oregon, United States, at an elevation of 260 ft MSL.

Does K4S9 have weather cameras?

K4S9 does not have a direct weather camera, but there are nearby cameras within range. Sign up for AeroCopilot to view all nearby airport cameras.

Complete aviation intelligence for K4S9

Live weather, decoded NOTAMs, IFR procedures, AI briefings, and more. Included in every AeroCopilot plan from $7.99/month.

Source: FAA faa-nasr· AIRAC 28-day cycle· Updated May 5, 11:47 PM UTC
Source: FAA noaa-awc-metar· Updated May 13, 07:30 PM UTCSource: FAA faa-nms-notam· Updated May 13, 07:30 PM UTC