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
- Attendance
- UNATNDD
- Segmented circle
- No
- Activated
- 1985/07
- Distance from city
- 3 ENE
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 | 04:35 AM | 08:35Z |
| Sunrise | 05:10 AM | 09:10Z |
| Sunset | 08:26 PM | 00:26Z |
| Evening civil twilight Loggable night begins | 09:01 PM | 01:01Z |
Plan a flight from 1MA5
Traffic pattern
- Landing
- Rwy 11
- Pattern
- left (turns left)
- TPA
- 1,400 ft MSL (≈1,000 AGL)
Enter the left downwind for Rwy 11 at 1,400 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 11/29
1,500 ft × 30 ft · Asphalt- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Tower, 380 ft, 2,200 ft from threshold
- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Trees, 75 ft, 200 ft from threshold
| Runway | Length | Your margin |
|---|---|---|
| 11/29 | 1,500 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| PUT · Putnam | VOR-DME | 117.40 | r048° / 23.5 NM |
| BOS · Boston | VORTAC | 112.70 | r275° / 25.2 NM |
| GDM · Gardner | VORTAC | 110.60 | r139° / 27.7 NM |
| PVD · Providence | VORTAC | 115.60 | r005° / 33.7 NM |
| LWM · Lawrence | VOR-DME | 112.50 | r231° / 34.2 NM |
| MHT · Manchester | VOR-DME | 114.40 | r208° / 36.3 NM |
VFR sectional
No published instrument procedures or Chart Supplement for 1MA5. VFR sectional link above.
Ownership & management
Remarks FAA
- PERSONAL USE, OPERATIONS BETWEEN SUNRISE/SUNSET DURING VFR WEATHER CONDITIONS.
- FOR CD CTC BOSTON APCH AT 603-594-5551.
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 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.
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 on the Comms & NavAids tab.
What is the longest runway at 1MA5?
Unknown Field has 1 runway; the longest is 1,500 ft. See the Runways tab 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.
Fly out of 1MA5 often?
Save 1MA5 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.