Reference only — not for real-world navigation.
LSZR
Sankt Gallen Altenrhein Airport · St. Gallen
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
1,306 ft / 398 m
Transition Altitude
7,000 ft
Primary Channel
TWR 118.65 MHz (TWR)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
10/28 · 4,774 ft · ASPHLIGHTED10G/28G · 2,657 ft · GRASSUNLIT-/- · 0 ft · —UNLITFlight Planning
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Welcome to the technical flight briefing for Sankt Gallen Altenrhein Airport (LSZR), located in St. Gallen, Switzerland. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 3 active runways with a maximum elevation of 1,306 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 7,000 ft verified for this field for altimeter reset procedures.
Full Name
Sankt Gallen Altenrhein Airport
ICAO / IATA
LSZR / ACH
Municipality
St. Gallen
Country
Region
CH-SG — St. Gallen
GPS Coordinates
Transition Altitude
7,000 ft
Elevation
1,306 ft
Official Website
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 10 / 28
ILS EQUIPPEDLIGHTED
Runway Length: 4,774 ft / 1,455 m
Runway Width: 98 ft / 30 m
Surface Type: ASPH
Heading: 99° / 279°
Runway Width: 98 ft / 30 m
Surface Type: ASPH
Heading: 99° / 279°
RWY 10 (99°)
111.75 MHz
IDENT: IALT | CRS: 101°
RWY 28 (279°)
111.75 MHz
IDENT: ISGA | CRS: 281°
Runway 10G / 28G
UNLIT
Runway Length: 2,657 ft / 810 m
Runway Width: 65 ft / 20 m
Surface Type: GRASS
Heading: 99° / 279°
Runway Width: 65 ft / 20 m
Surface Type: GRASS
Heading: 99° / 279°
RWY 10G (99°)
No ILS / Visual Only
RWY 28G (279°)
No ILS / Visual Only
Runway - / -
UNLIT
Runway Length: 0 ft / —
Runway Width: 0 ft / —
Surface Type: —
Heading: —° / —°
Runway Width: 0 ft / —
Surface Type: —
Heading: —° / —°
RWY -
No ILS / Visual Only
RWY -
No ILS / Visual Only
ACC ZURICH RADAR
133.90 MHz
ARR ZURICH ARR
119.92 MHz
ATIS ATIS
123.78 MHz
FIS Zurich Information (en,ge)
124.70 MHz
GND GND
121.80 MHz
TWR TWR
118.65 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026