Reference only — not for real-world navigation.
KJNX
Johnston Regional Airport · Smithfield
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
164 ft / 50 m
Transition Altitude
18,000 ft
Primary Channel
UNIC 122.80 MHz (CTAF/UNICOM)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
03/21 · 5,500 ft · AsphaltLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Johnston Regional Airport (KJNX), located in Smithfield, 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 164 ft. Instrument approaches (IFR) are supported with verified ILS frequencies and identifiers for precision landings.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
Johnston Regional Airport
ICAO / IATA
KJNX / —
Municipality
Smithfield
Country
Region
US-NC — North Carolina
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
164 ft
Official Website
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 03 / 21
ILS EQUIPPEDLIGHTED
Runway Length: 5,500 ft / 1,676 m
Runway Width: 100 ft / 30 m
Surface Type: Asphalt
Heading: 30° / 210°
Runway Width: 100 ft / 30 m
Surface Type: Asphalt
Heading: 30° / 210°
RWY 03 (30°)
111.15 MHz
IDENT: JNX | CRS: 32°
RWY 21 (210°)
No ILS / Visual Only
A/D RALEIGH APP/DEP
125.30 MHz
UNIC CTAF/UNICOM
122.80 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: FAA NASR · Cycle: Jan 2026