Reference only — not for real-world navigation.
KATY
Watertown Regional Airport · Watertown
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
1,749 ft / 533 m
Transition Altitude
18,000 ft
Primary Channel
RDO 122.50 MHz (HURON RDO)
Live Conversion
inHg
hPa
Flight Planning
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Welcome to the technical flight briefing for Watertown Regional Airport (KATY), located in Watertown, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 2 active runways with a maximum elevation of 1,749 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
Watertown Regional Airport
ICAO / IATA
KATY / ATY
Municipality
Watertown
Country
Region
US-SD — South Dakota
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
1,749 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 12 / 30
LIGHTED
Runway Length: 6,900 ft / 2,103 m
Runway Width: 150 ft / 46 m
Surface Type: Asphalt
Heading: 124.6° / 304.6°
Runway Width: 150 ft / 46 m
Surface Type: Asphalt
Heading: 124.6° / 304.6°
RWY 12 (124.6°)
No ILS / Visual Only
RWY 30 (304.6°)
No ILS / Visual Only
Runway 17 / 35
ILS EQUIPPEDLIGHTED
Runway Length: 6,895 ft / 2,102 m
Runway Width: 150 ft / 46 m
Surface Type: Asphalt
Heading: 180.3° / 0.3°
Runway Width: 150 ft / 46 m
Surface Type: Asphalt
Heading: 180.3° / 0.3°
RWY 17 (180.3°)
No ILS / Visual Only
RWY 35 (0.3°)
111.90 MHz
IDENT: ATY | CRS: 354°
ASOS ASOS
126.63 MHz
CNTR MINNEAPOLIS CNTR
128.50 MHz
RDO HURON RDO
122.50 MHz
UNIC CTAF/UNICOM
123.05 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: FAA NASR · Cycle: Jan 2026