Reference only — not for real-world navigation.
4U4
Maddox Ranch Co Airport · Chinook
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
2,589 ft / 789 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Flight Planning
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Welcome to the technical flight briefing for Maddox Ranch Co Airport (4U4), located in Chinook, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 2 active runways with a maximum elevation of 2,589 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
Maddox Ranch Co Airport
ICAO / IATA
4U4 / —
Municipality
Chinook
Country
Region
US-MT — Montana
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
2,589 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 04 / 22
LIGHTED
Runway Length: 3,650 ft / 1,113 m
Runway Width: 50 ft / 15 m
Surface Type: TURF-GRVL-F
Heading: —° / —°
Runway Width: 50 ft / 15 m
Surface Type: TURF-GRVL-F
Heading: —° / —°
RWY 04
No ILS / Visual Only
RWY 22
No ILS / Visual Only
Runway 11 / 29
UNLIT
Runway Length: 2,254 ft / 687 m
Runway Width: 55 ft / 17 m
Surface Type: TURF-F
Heading: —° / —°
Runway Width: 55 ft / 17 m
Surface Type: TURF-F
Heading: —° / —°
RWY 11
No ILS / Visual Only
RWY 29
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026