Reference only — not for real-world navigation.
NK41
Mather Hospital Heliport · Port Jefferson
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
206 ft / 63 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
H1/ · 110 ft · ASPH/ CONCUNLITFlight Planning
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Welcome to the technical flight briefing for Mather Hospital Heliport (NK41), located in Port Jefferson, 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 206 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
Mather Hospital Heliport
ICAO / IATA
NK41 / —
Municipality
Port Jefferson
Country
Region
US-NY — New York
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
206 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway H1 /
UNLIT
Runway Length: 110 ft / 34 m
Runway Width: 110 ft / 34 m
Surface Type: ASPH/ CONC
Heading: —° / —°
Runway Width: 110 ft / 34 m
Surface Type: ASPH/ CONC
Heading: —° / —°
RWY H1
No ILS / Visual Only
RWY
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026