Reference only — not for real-world navigation.
31D
Inter County Airport · Irwin
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
1,250 ft / 381 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
E/W · 1,960 ft · TURF-DIRT-FUNLITFlight Planning
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Welcome to the technical flight briefing for Inter County Airport (31D), located in Irwin, 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 1,250 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
Inter County Airport
ICAO / IATA
31D / —
Municipality
Irwin
Country
Region
US-PA — Pennsylvania
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
1,250 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway E / W
UNLIT
Runway Length: 1,960 ft / 597 m
Runway Width: 120 ft / 37 m
Surface Type: TURF-DIRT-F
Heading: —° / —°
Runway Width: 120 ft / 37 m
Surface Type: TURF-DIRT-F
Heading: —° / —°
RWY E
No ILS / Visual Only
RWY W
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026