Reference only — not for real-world navigation.
K4S9
Portland Mulino Airport · Portland-Mulino
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
260 ft / 79 m
Transition Altitude
18,000 ft
Primary Channel
CLD 119.95 MHz (CLD)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
14/32 · 3,600 ft · AsphaltLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Portland Mulino Airport (K4S9), located in Portland-Mulino, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 1 active runway with a maximum elevation of 260 ft. Please note that this field primarily supports VFR and visual approach procedures.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 18,000 ft verified for this field for altimeter reset procedures.
Full Name
Portland Mulino Airport
ICAO / IATA
K4S9 / —
Municipality
Portland-Mulino
Country
Region
US-OR — Oregon
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
260 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 14 / 32
LIGHTED
Runway Length: 3,600 ft / 1,097 m
Runway Width: 100 ft / 30 m
Surface Type: Asphalt
Heading: 160° / 340°
Runway Width: 100 ft / 30 m
Surface Type: Asphalt
Heading: 160° / 340°
RWY 14 (160°)
No ILS / Visual Only
RWY 32 (340°)
No ILS / Visual Only
CLD CLD
119.95 MHz
UNIC CTAF/UNICOM
123.05 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026