Reference only — not for real-world navigation.
KMUI
Muir Army Air Field (Fort Indiantown Gap) Airport · Fort Indiantown Gap(Annville)
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
488 ft / 149 m
Transition Altitude
18,000 ft
Primary Channel
TWR 126.20 MHz (TWR)
Live Conversion
inHg
hPa
Flight Planning
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Welcome to the technical flight briefing for Muir Army Air Field (Fort Indiantown Gap) Airport (KMUI), located in Fort Indiantown Gap(Annville), United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 4 active runways with a maximum elevation of 488 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
Muir Army Air Field (Fort Indiantown Gap) Airport
ICAO / IATA
KMUI / MUI
Municipality
Fort Indiantown Gap(Annville)
Country
Region
US-PA — Pennsylvania
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
488 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 07 / 25
ILS EQUIPPEDLIGHTED
Runway Length: 3,967 ft / 1,209 m
Runway Width: 100 ft / 30 m
Surface Type: Asphalt
Heading: 59.6° / 239.6°
Runway Width: 100 ft / 30 m
Surface Type: Asphalt
Heading: 59.6° / 239.6°
RWY 07 (59.6°)
No ILS / Visual Only
RWY 25 (239.6°)
111.75 MHz
IDENT: MUI | CRS: 240°
Runway H1 /
UNLIT
Runway Length: 100 ft / 30 m
Runway Width: 100 ft / 30 m
Surface Type: Concrete
Heading: —° / —°
Runway Width: 100 ft / 30 m
Surface Type: Concrete
Heading: —° / —°
RWY H1
No ILS / Visual Only
RWY
No ILS / Visual Only
Runway H2 /
UNLIT
Runway Length: 100 ft / 30 m
Runway Width: 100 ft / 30 m
Surface Type: Concrete
Heading: —° / —°
Runway Width: 100 ft / 30 m
Surface Type: Concrete
Heading: —° / —°
RWY H2
No ILS / Visual Only
RWY
No ILS / Visual Only
Runway H3 /
UNLIT
Runway Length: 100 ft / 30 m
Runway Width: 100 ft / 30 m
Surface Type: Concrete
Heading: —° / —°
Runway Width: 100 ft / 30 m
Surface Type: Concrete
Heading: —° / —°
RWY H3
No ILS / Visual Only
RWY
No ILS / Visual Only
A/D HARRISBURG APP/DEP
118.25 MHz
CTAF CTAF
126.20 MHz
GND GND
121.63 MHz
MISC FLT FLW
40.90 MHz
OPS ARNG OPS
49.95 MHz
TWR TWR
126.20 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: FAA NASR · Cycle: Jan 2026