Reference only — not for real-world navigation.
KNHK
Patuxent River Naval Air Station (Trapnell Field) · Patuxent River
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
39 ft / 12 m
Transition Altitude
18,000 ft
Primary Channel
TWR 123.70 MHz (TWR)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
06/24 · 11,807 ft · PEMLIGHTED14/32 · 9,742 ft · PEMLIGHTED02/20 · 5,021 ft · AsphaltUNLITFlight Planning
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Welcome to the technical flight briefing for Patuxent River Naval Air Station (Trapnell Field) (KNHK), located in Patuxent River, United States. 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 39 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
Patuxent River Naval Air Station (Trapnell Field)
ICAO / IATA
KNHK / NHK
Municipality
Patuxent River
Country
Region
US-MD — Maryland
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
39 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 06 / 24
ILS EQUIPPEDLIGHTED
Runway Length: 11,807 ft / 3,599 m
Runway Width: 200 ft / 61 m
Surface Type: PEM
Heading: 49.1° / 229.1°
Runway Width: 200 ft / 61 m
Surface Type: PEM
Heading: 49.1° / 229.1°
RWY 06 (49.1°)
108.70 MHz
IDENT: NHK | CRS: 59°
RWY 24 (229.1°)
No ILS / Visual Only
Runway 14 / 32
LIGHTED
Runway Length: 9,742 ft / 2,969 m
Runway Width: 200 ft / 61 m
Surface Type: PEM
Heading: 126° / 306°
Runway Width: 200 ft / 61 m
Surface Type: PEM
Heading: 126° / 306°
RWY 14 (126°)
No ILS / Visual Only
RWY 32 (306°)
No ILS / Visual Only
Runway 02 / 20
UNLIT
Runway Length: 5,021 ft / 1,530 m
Runway Width: 75 ft / 23 m
Surface Type: Asphalt
Heading: 8.1° / 188.1°
Runway Width: 75 ft / 23 m
Surface Type: Asphalt
Heading: 8.1° / 188.1°
RWY 02 (8.1°)
No ILS / Visual Only
RWY 20 (188.1°)
No ILS / Visual Only
A/D APP/DEP
120.05 MHz
ATIS ATIS
27.62 MHz
CLD CLNC DEL
135.20 MHz
GND GND
120.60 MHz
OPS BASE OPS
30.25 MHz
PMSV PMSV METRO
35.62 MHz
RDO LEESBURG RDO
117.60 MHz
TWR TWR
123.70 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: FAA NASR · Cycle: Jan 2026