Reference only — not for real-world navigation.
K0S9
Jefferson County International Airport · Port Townsend
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
108 ft / 33 m
Transition Altitude
18,000 ft
Primary Channel
AWOS-3P 119.03 MHz (Phone: 360-379-1199)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
09/27 · 3,000 ft · ASPH-GLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Jefferson County International Airport (K0S9), located in Port Townsend, 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 108 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
Jefferson County International Airport
ICAO / IATA
K0S9 / TWD
Municipality
Port Townsend
Country
Region
US-WA — Washington
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
108 ft
Official Website
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 09 / 27
LIGHTED
Runway Length: 3,000 ft / 914 m
Runway Width: 75 ft / 23 m
Surface Type: ASPH-G
Heading: 104° / 337°
Runway Width: 75 ft / 23 m
Surface Type: ASPH-G
Heading: 104° / 337°
RWY 09 (104°)
No ILS / Visual Only
RWY 27 (337°)
No ILS / Visual Only
AWOS-3P Phone: 360-379-1199
119.03 MHz
UNIC CTAF/UNICOM
123.00 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026