Sunnyvale Field Private
CT21 · North Stonington, CT · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-18 · night begins 07:20 PM
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:03 AM | 10:03Z |
| Sunrise | 06:30 AM | 10:30Z |
| Sunset | 06:52 PM | 22:52Z |
| Evening civil twilight Loggable night begins | 07:20 PM | 23:20Z |
Plan a flight from CT21
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY 19LEFT traffic
- Heading
- 195° true
- Dimensions
- 2,004 × 50 ft
- TPA
- 1,200 ft MSL (≈1,000 AGL) · standard
- Surface
- Dirt
Enter the left downwind (heading 015°) on the 45° at 1,200 ft MSL (≈1,000 AGL).
More details — RWY 19
- Threshold elev
- 213 ft
- Markings
- STOL
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 01/19 | 2,004 ft |
Prefer one flat page? Full runway details for CT21 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the CT21 kneeboard →
Comms & NavAids
Nearby navigation aids
ORW 110.00 · GON 110.85 · SEY 117.80 · +4
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| ORW · Norwich | VOR/DME | 110.00 · 37X | Low | r141° / 9.5 NM |
| GON · Groton | VOR/DME | 110.85 · 45Y | Terminal | r066° / 12.7 NM |
| SEY · Sandy Point | VOR/DME | 117.80 · 125X | Low | r342° / 21 NM |
| PVD · Providence | VOR/DME | 115.60 · 103X | High | r243° / 24 NM |
| PUT · Putnam | VOR/DME | 117.40 · 121X | High | r193° / 29.7 NM |
| HFD · Hartford | VOR/DME | 114.90 · 96X | Low | r121° / 34 NM |
| HTO · Hampton | VORTAC | 113.60 · 83X | High | r047° / 39.3 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for CT21 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- CT21
- Coordinates
- 41.4606, -71.8302
- Elevation
- 213 ft MSL
- Sectional chart
- NEW YORK
- Airport use
- Private
- Control tower
- No
- ARTCC
- BOSTON (ZBW)
- Flight service (FSS)
- BRIDGEPORT · 122.2 · 1-800-WX-BRIEF
- Segmented circle
- No
- Activated
- 2025/04
- Distance from city
- 3 ENE
Ownership & management 2 contacts
Nearby airports
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Also nearby: CT48 Wychwood Field (private) (5 NM) · CT80 Stonington Airpark (private) (7 NM) · 24CT Bee Field (private) (9 NM) · CT43 Spruce (private) (9 NM) · 08R Richmond (10 NM)
About CT21
Sunnyvale Field (CT21) is an airport in North Stonington, CT, at 213 ft MSL. It has 1 runway, the longest 2,004 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for CT21, refreshed from the Aviation Weather Center and FAA NASR.
Does CT21 have a control tower?
No. Sunnyvale Field is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at CT21?
Sunnyvale Field has 1 runway; the longest is 2,004 ft. See the Runways section for headings, surface, and lighting.
Where is CT21?
Sunnyvale Field is in North Stonington, CT, at an elevation of 213 ft MSL. Coordinates: 41.4606, -71.8302.
More about CT21
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 CT21 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.
Something here wrong or out of date? Report a data problem.