Airport information
- FAA LID
- 21N
- Coordinates
- 40.9876, -72.5190
- Elevation
- 30 ft MSL
- Magnetic variation
- 14W
- Sectional chart
- NEW YORK
- Airport use
- Public
- Control tower
- No
- ARTCC
- NEW YORK (ZNY)
- Flight service (FSS)
- NEW YORK
- NOTAM facility
- ISP
- Attendance
- UNATT
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1947/09
- Distance from city
- 1 SE
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 | 04:44 AM | 08:44Z |
| Sunrise | 05:18 AM | 09:18Z |
| Sunset | 08:26 PM | 00:26Z |
| Evening civil twilight Loggable night begins | 08:59 PM | 00:59Z |
Plan a flight from 21N
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 01 · 013°
- Pattern
- left (turns left)
- TPA
- 1,000 ft MSL (≈1,000 AGL)
- CTAF
- 122.9
Enter the left downwind for Rwy 01 at 1,000 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 01/19
2,200 ft × 60 ft · Asphalt (Good)- Heading
- 013° mag · 359° true
- Markings
- basic
- Traffic pattern
- Left
- Approach obstacle
- Trees, 44 ft, 209 ft from threshold, 77 ft R of centerline
- Heading
- 193° mag · 179° true
- Markings
- basic
- Traffic pattern
- Left
- Approach obstacle
- Trees, 51 ft, 360 ft from threshold, 117 ft R of centerline — 3:1 slope to clear · penetrates the 20:1 visual approach surface
| Runway | Length | Your margin |
|---|---|---|
| 01/19 | 2,200 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| HTO · Hampton | VORTAC | 113.60 | r307° / 10.1 NM |
| FOK · Suffolk Co | TACAN | 111.00 | r043° / 10.3 NM |
| CCC · Calverton | VOR-DME | 117.20 | r088° / 13.2 NM |
| MAD · Madison | VOR-DME | 110.40 | r171° / 21.1 NM |
| HVN · New Haven | VOR-DME | 109.80 | r148° / 23.4 NM |
| BDR · Bridgeport | VOR-DME | 108.80 | r123° / 29.3 NM |
| GON · Groton | VOR-DME | 110.85 | r240° / 29.5 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns, hangars
Ownership & management
Remarks FAA
- ALL TRNG OPNS; TKOF/LNDG PRACTICE AND NIGHT OPNS ARE PROHIBITED.
- SEGMENTED CIRCLE HAS NO TFC PATTERN INDICATOR.
- DEER ON & INVOF ARPT.
- FOR CD CTC NEW YORK APCH AT 516-683-2449.
- CALL AMGR FOR PMSN TO LND.
- +5 FT FENCE & SHRUBS 0-200 FT FM THR ON BOTH SIDES OF RWY; +46 FT TREES 0-200 FT FM THR 75-120 FT R; +10 FT WIDE ROAD 0-20 FT FM BOTH SIDES OF RWY THR.
- +29 FT TREES 73 FT FM THR 38 FT R; +50 FT TREES 0 FT FM THR 64 FT L; +8 FT BERM 29-69 FT FM THR ON BOTH SIDES OF RWY.
- TWO STORY HOUSE 165 FT FM RWY THR, RIGHT OF CNTRLN.
- CTLNG OBSTN EXCEEDS 45 DEG SLP.
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 21N 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 21N
Mattituck Airport (21N) is an airport in Mattituck, NY, at 30 ft MSL. It has 1 runway, the longest 2,200 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 21N, refreshed from the Aviation Weather Center and FAA NASR.
Does 21N have a control tower?
No. Mattituck Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 21N?
Mattituck Airport has 1 runway; the longest is 2,200 ft. See the Runways tab for headings, surface, and lighting.
Where is 21N?
Mattituck Airport is in Mattituck, NY, at an elevation of 30 ft MSL. Coordinates: 40.9876, -72.5190.
Fly out of 21N often?
Save 21N 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.