AirNav: 3NJ4 - Sarnoff Princeton Heliport

3NJ4

Sarnoff Princeton Heliport
Princeton, New Jersey, USA

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FAA INFORMATION EFFECTIVE 30 OCTOBER 2025

Location

FAA Identifier:	3NJ4
Lat/Long:	40-19-50.0000N 074-37-40.0000W 40-19.833333N 074-37.666667W 40.3305556,-74.6277778 (estimated)
Elevation:	90 ft. / 27 m (estimated)
Variation:	12W (1985)
From city:	3 miles SE of PRINCETON, NJ
Time zone:	UTC -5 (UTC -4 during Daylight Saving Time)
Zip code:	08540

Heliport Operations

Heliport use:	Private use. Permission required prior to landing
Activation date:	03/1961
Control tower:	no
ARTCC:	NEW YORK CENTER
FSS:	MILLVILLE FLIGHT SERVICE STATION
Attendance:	UNATNDD
Wind indicator:	yes
Segmented circle:	no

Heliport Communications

WX ASOS at TTN (9 nm W):	126.775 (609-538-8690)
WX ASOS at SMQ (18 nm N):	120.6 (908-722-2139)

Nearby radio navigation aids

VOR radial/distance	VOR name	Freq	Var
RBVr332/9.8	ROBBINSVILLE VORTAC	113.80	10W
ARDr080/13.6	YARDLEY VOR/DME	108.20	10W
SBJr171/16.0	SOLBERG VOR/DME	112.90	10W
GXUr008/19.3	MC GUIRE VORTAC	110.60	12W
COLr284/21.4	COLTS NECK VOR/DME	115.40	11W
BWZr174/29.4	BROADWAY VOR/DME	114.20	11W
CYNr354/32.1	COYLE VORTAC	113.40	10W
CRIr254/37.5	CANARSIE VOR/DME	112.30	11W

NDB name		Hdg/Dist		Freq		Var		ID
LAKEHURST		333/21.8		396		11W		NEL	-. . .-..

Heliport Services

Airframe service:	NONE
Powerplant service:	NONE

Runway Information

Helipad H1

Dimensions:	50 x 50 ft. / 15 x 15 m
Surface:	asphalt
Latitude:	40-19.833333N
Longitude:	074-37.666667W
Elevation:	90.0 ft.
Traffic pattern:	left	left

Heliport Ownership and Management from official FAA records

Ownership:	Privately-owned
Owner:	SRI INTERNATIONAL - SARNOFF 201 WASHINGTON ROAD PRINCETON, NJ 08540 Phone 609-734-2000
Manager:	MICHAEL L DAVIS 201 WASHINGTON ROAD PRINCETON, NJ 08540 Phone 609-734-2538 SECURITY OPERATIONS CENTER - 609-734-2318

Additional Remarks

-	SECURITY OPERATIONS CENTER: 24-HR ON-SITE EMERGENCY NUMBER 609-734-2318.
-	FOR CD CTC NEW YORK APCH AT 800-645-3206.

Instrument Procedures

There are no published instrument procedures at 3NJ4.

Some nearby airports with instrument procedures:

39N - Princeton Airport (4 nm N)
N87 - Trenton-Robbinsville Airport (7 nm S)
KTTN - Trenton Mercer Airport (9 nm W)
47N - Central Jersey Regional Airport (12 nm N)
3N6 - Old Bridge Airport (13 nm E)
N51 - Solberg/Hunterdon Airport (16 nm N)
KSMQ - Somerset Airport (18 nm N)
KWRI - McGuire Field (Joint Base Mc Guire Dix Lakehurst) Airport (19 nm S)

Loc | Ops | Rwys | IFR | FBO | Links
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Area around 3NJ4 (Sarnoff Princeton Heliport)

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Aerial photo

Sectional chart

Airport distance calculator
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Sunrise and sunset

Times for 26-Nov-2025

	Local (UTC-5)	Zulu (UTC)
Morning civil twilight	06:28	11:28
Sunrise	06:58	11:58
Sunset	16:34	21:34
Evening civil twilight	17:04	22:04

Current date and time

Zulu (UTC)	26-Nov-2025 08:23:36
Local (UTC-5)	26-Nov-2025 03:23:36

METAR

KTTN 9nm W	ASOS 133.70 609-538-8690 260753Z AUTO 00000KT 7SM SCT060 OVC095 12/11 A2988 RMK AO2 SLP111 T01170111
KSMQ 17nm N	ASOS 120.60 908-722-2139 260753Z AUTO 00000KT 9SM OVC060 12/11 A2987 RMK AO2 SLP113 T01220111
KWRI 19nm S	260755Z AUTO 23007KT 8SM OVC007 14/13 A2989 RMK AO2 CIG 005 RWY06 SLP121 T01410131

TAF

KTTN 9nm W	260529Z 2606/2706 20006KT 6SM BR BKN007 FM260700 20004KT 5SM BR BKN006 FM261100 21005KT 2SM BR BKN005 FM261600 23006KT P6SM BKN008 FM261900 23006KT P6SM BKN020 FM262200 25009KT P6SM BKN035 FM270000 28012G22KT P6SM FEW050
KWRI 19nm S	260455Z 2604/2708 23010G15KT 6000 -SHRA BR BKN007 OVC015 QNH2977INS BECMG 2614/2615 23010G15KT 9000 BR BKN010 OVC020 QNH2975INS BECMG 2622/2623 28012G25KT 9999 NSW SCT040 QNH2973INS TX17/2618Z TN09/2702Z

NOTAMs

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