Airport information
- FAA LID
- 4N1
- Coordinates
- 41.1282, -74.3467
- Elevation
- 791 ft MSL
- Magnetic variation
- 13W
- Sectional chart
- NEW YORK
- Airport use
- Public
- Control tower
- No
- ARTCC
- NEW YORK (ZNY)
- Flight service (FSS)
- MILLVILLE
- NOTAM facility
- MIV
- Attendance
- ALL 0800-1700
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- lighted
- Activated
- 1960/06
- Distance from city
- 1 E
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:51 AM | 08:51Z |
| Sunrise | 05:25 AM | 09:25Z |
| Sunset | 08:33 PM | 00:33Z |
| Evening civil twilight Loggable night begins | 09:07 PM | 01:07Z |
Plan a flight from 4N1
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- AUTOMATED UNICOM; 3 CLICKS TO ACTVT.; ACTVT MIRL RWY 06/24 - CTAF, 5 CLICKS. PAPI RWY 24 OPR CONSLY. on 122.9 — Chart Supplement ↗
Runway lighting aids — 24: 2-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 06 · 061°
- Pattern
- right (turns right)
- TPA
- 1,800 ft MSL (≈1,000 AGL)
- CTAF
- 122.9
Enter the right downwind for Rwy 06 at 1,800 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 06/24
3,471 ft × 60 ft · Asphalt (Excellent)- Heading
- 061° mag · 48° true
- Markings
- nonprecision
- Traffic pattern
- Right
- Approach obstacle
- Trees, 192 ft, 1,988 ft from threshold, 170 ft R of centerline — 9:1 slope to clear · penetrates the 20:1 visual approach surface
- Heading
- 241° mag · 228° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (3.5°)
- Traffic pattern
- Left
- Approach obstacle
- Tree, 23 ft, 680 ft from threshold, 132 ft L of centerline — 20:1 slope to clear
| Runway | Length | Your margin |
|---|---|---|
| 06/24 | 3,471 ft |
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| CTAF | 122.9 | AUTOMATED UNICOM; 3 CLICKS TO ACTVT.; ACTVT MIRL RWY 06/24 - CTAF, 5 CLICKS. PAPI RWY 24 OPR CONSLY. |
| APCH/P DEP/P | 127.6 | |
| APCH/P DEP/P | 379.9 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| SAX · Sparta | VORTAC | 115.70 | r078° / 9.4 NM |
| HUO · Huguenot | VOR-DME | 116.10 | r158° / 20.2 NM |
| TEB · Teterboro | VOR-DME | 108.40 | r334° / 21.2 NM |
| STW · Stillwater | VOR-DME | 109.60 | r082° / 24.9 NM |
| BWZ · Broadway | VOR-DME | 114.20 | r058° / 29.3 NM |
| LGA · La Guardia | VOR-DME | 113.10 | r326° / 30 NM |
| CMK · Carmel | VOR-DME | 116.60 | r267° / 35.8 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, Jet A
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns
- Other services
- Air ambulance, Instruction, Parachute ops, Rental, Aircraft sales
Ownership & management
Remarks FAA
- RECOMMENDED THAT WIRES RWY 6 APCH BE MKD WITH PLASTIC BALLS OR PUT UNDERGND (WIRES NOW MKD & LGTS MOUNTED ON POLES).
- AUTOMATED UNICOM; 3 CLICKS TO ACTVT.
- RY 06/24 STEEP ROCK LEDGES LCTD JUST BYD BOTH RY ENDS.
- ARPT SUBJECT TO GUSTING WIND & FREQUENT CROSSWINDS.
- SOME RWY AND TWY LGTS TALLER THAN STANDARD.
- DEER AND BIRDS ON AND INVOF ARPT.
- FOR CD CTC NEWARK APCH AT 800-645-3206.
- DROP ZONE LCTD SE SIDE OF RWY.
- ACTVT MIRL RWY 06/24 - CTAF, 5 CLICKS. PAPI RWY 24 OPR CONSLY.
- TREES BELOW RWY END, CLIFF.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 4N1 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
About 4N1
Greenwood Lake Airport (4N1) is an airport in West Milford, NJ, at 791 ft MSL. It has 1 runway, the longest 3,471 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 4N1, refreshed from the Aviation Weather Center and FAA NASR.
Does 4N1 have a control tower?
No. Greenwood Lake Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 4N1?
Greenwood Lake Airport has 1 runway; the longest is 3,471 ft. See the Runways tab for headings, surface, and lighting.
Where is 4N1?
Greenwood Lake Airport is in West Milford, NJ, at an elevation of 791 ft MSL. Coordinates: 41.1282, -74.3467.
Fly out of 4N1 often?
Save 4N1 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.