Unknown Field Private
1MA5 · Southborough, MA · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-22 · night begins 07:12 PM
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:05 AM | 10:05Z |
| Sunrise | 06:33 AM | 10:33Z |
| Sunset | 06:44 PM | 22:44Z |
| Evening civil twilight Loggable night begins | 07:12 PM | 23:12Z |
Plan a flight from 1MA5
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…
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Runways
RWY 11LEFT traffic
- Heading
- 110° mag · 095° true
- Dimensions
- 1,500 × 30 ft
- TPA
- 1,400 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
Enter the left downwind (heading 290°) on the 45° at 1,400 ft MSL (≈1,000 AGL).
More details — RWY 11
- Approach obstacle
- Tower, 380 ft, 2,200 ft from threshold
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
| Runway | Length | Your margin |
|---|---|---|
| 11/29 | 1,500 ft |
Prefer one flat page? Full runway details for 1MA5 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 1MA5 kneeboard →
Comms & NavAids
Nearby navigation aids
PUT 117.40 · BOS 112.70 · GDM 116.95 · +1
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| PUT · Putnam | VOR/DME | 117.40 · 121X | High | r048° / 23.5 NM |
| BOS · Boston | VOR/DME | 112.70 · 74X | High | r275° / 25.2 NM |
| GDM · Gardner | VOR/DME | 116.95 · 116Y | Low | r139° / 27.7 NM |
| PVD · Providence | VOR/DME | 115.60 · 103X | High | r005° / 33.7 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for 1MA5 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 1MA5
- Coordinates
- 42.2790, -71.5478
- Elevation
- 432 ft MSL
- Magnetic variation
- 15W
- Sectional chart
- NEW YORK
- Airport use
- Private
- Control tower
- No
- ARTCC
- BOSTON (ZBW)
- Flight service (FSS)
- BRIDGEPORT · 122.2 · 1-800-WX-BRIEF
- Attendance
- UNATNDD
- Segmented circle
- No
- Landing fee
- Yes
- Activated
- 1985/07
- Distance from city
- 3 ENE
Ownership & management 2 contacts
Remarks FAA · 1 notes
General
- FOR CD CTC BOSTON APCH AT 603-594-5551.
Nearby airports
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Also nearby: 8MA4 Crow Island (private) (9 NM) · MA52 Sids (private) (10 NM) · 1B6 Hopedale Industrial Park (10 NM) · 6B6 Minute Man Air Field (11 NM) · 3B3 Sterling (14 NM)
About 1MA5
Unknown Field (1MA5) is an airport in Southborough, MA, at 432 ft MSL. It has 1 runway, the longest 1,500 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 1MA5, refreshed from the Aviation Weather Center and FAA NASR.
Does 1MA5 have a control tower?
No. Unknown Field is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 1MA5?
Unknown Field has 1 runway; the longest is 1,500 ft. See the Runways section for headings, surface, and lighting.
Where is 1MA5?
Unknown Field is in Southborough, MA, at an elevation of 432 ft MSL. Coordinates: 42.2790, -71.5478.
More about 1MA5
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 1MA5 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.