Larson's Seaplane BasePrivate
MA74 · Tyngsboro, MA · Non-towered · 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 | 06:04 AM | 10:04Z |
| Sunrise | 06:33 AM | 10:33Z |
| Sunset | 06:43 PM | 22:43Z |
| Evening civil twilight Loggable night begins | 07:12 PM | 23:12Z |
Plan a flight from MA74
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
| Runway | Length | Your margin |
|---|---|---|
| 13W/31W | 2,500 ft |
Prefer one flat page? Full runway details for MA74 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the MA74 kneeboard →
Comms & NavAids
Nearby navigation aids
BOS 112.70 · GDM 116.95 · CON 112.90
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| BOS · Boston | VOR/DME | 112.70 · 74X | High | r333° / 27.6 NM |
| GDM · Gardner | VOR/DME | 116.95 · 116Y | Low | r087° / 29.6 NM |
| CON · Concord | VOR/DME | 112.90 · 76X | Low | r183° / 32.5 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for MA74 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- MA74
- Coordinates
- 42.6915, -71.4181
- Elevation
- 90 ft MSL
- Magnetic variation
- 16W
- Sectional chart
- NEW YORK
- Airport use
- Private
- Control tower
- No
- ARTCC
- BOSTON (ZBW)
- Flight service (FSS)
- BRIDGEPORT · 122.2 · 1-800-WX-BRIEF
- Attendance
- ALL DALGT
- Segmented circle
- No
- Distance from city
- 1 NE
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: NH78 Steck Farm (private) (4 NM) · 26MA Pepperell (private) (6 NM) · NH16 Brookline (private) (13 NM) · 52NH Baboosic Lake (private) (13 NM)
About MA74
Larson's (MA74) is a seaplane base in Tyngsboro, MA, at 90 ft MSL. It has 1 runway, the longest 2,500 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for MA74, refreshed from the Aviation Weather Center and FAA NASR.
Does MA74 have a control tower?
No. Larson's is a non-towered (pilot-controlled) seaplane base; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at MA74?
Larson's has 1 runway; the longest is 2,500 ft. See the Runways section for headings, surface, and lighting.
Where is MA74?
Larson's is in Tyngsboro, MA, at an elevation of 90 ft MSL. Coordinates: 42.6915, -71.4181.
More about MA74
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 MA74 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.