Reference only — not for real-world navigation.
1Y3
Judge Lewis Field Mount Ayr Municipal Airport · Mount Ayr
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
1,265 ft / 386 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
17/35 · 2,600 ft · GRVL-TRTD-FLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Judge Lewis Field Mount Ayr Municipal Airport (1Y3), located in Mount Ayr, 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 1,265 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
Judge Lewis Field Mount Ayr Municipal Airport
ICAO / IATA
1Y3 / —
Municipality
Mount Ayr
Country
Region
US-IA — Iowa
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
1,265 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 17 / 35
LIGHTED
Runway Length: 2,600 ft / 792 m
Runway Width: 40 ft / 12 m
Surface Type: GRVL-TRTD-F
Heading: —° / 216°
Runway Width: 40 ft / 12 m
Surface Type: GRVL-TRTD-F
Heading: —° / 216°
RWY 17
No ILS / Visual Only
RWY 35 (216°)
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026