Reference only — not for real-world navigation.
7G4
Blue Knob Valley Airport · Duncansville
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
1,270 ft / 387 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
11/29 · 3,415 ft · GRVL-FUNLITFlight Planning
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Welcome to the technical flight briefing for Blue Knob Valley Airport (7G4), located in Duncansville, 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 1,270 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
Blue Knob Valley Airport
ICAO / IATA
7G4 / —
Municipality
Duncansville
Country
Region
US-PA — Pennsylvania
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
1,270 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 11 / 29
UNLIT
Runway Length: 3,415 ft / 1,041 m
Runway Width: 89 ft / 27 m
Surface Type: GRVL-F
Heading: —° / —°
Runway Width: 89 ft / 27 m
Surface Type: GRVL-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