Alton Bay Seaplane Base & Ice Rwy Seaplane Base
B18 · Alton Bay, NH · 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 07:11 PM
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:03 AM | 10:03Z |
| Sunrise | 06:32 AM | 10:32Z |
| Sunset | 06:43 PM | 22:43Z |
| Evening civil twilight Loggable night begins | 07:11 PM | 23:11Z |
Plan a flight from B18
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
| Runway | Length | Your margin |
|---|---|---|
| 01W/19W | 2,600 ft |
Prefer one flat page? Full runway details for B18 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the B18 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
CON 112.90 · ENE 117.10
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| CON · Concord | VOR/DME | 112.90 · 76X | Low | r059° / 21.4 NM |
| ENE · Kennebunk | VOR/DME | 117.10 · 118X | High | r294° / 27.4 NM |
Prefer one flat list? All B18 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- B18
- Coordinates
- 43.4776, -71.2370
- Elevation
- 504 ft MSL
- Magnetic variation
- 16W
- Sectional chart
- NEW YORK
- Airport use
- Public
- Control tower
- No
- ARTCC
- BOSTON (ZBW)
- Flight service (FSS)
- BANGOR · 1-800-WX-BRIEF
- NOTAM facility
- BGR
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1994/02
- Distance from city
- 2 N
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.8 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Ownership & management 2 contacts
Remarks FAA · 8 notes
General
- RWY 01W/19W PWRLINE MKD WITH ORANGE BALLS 1000 FT S OF THR AT S END; LESS THAN 30 FT HGT ALG ROADWAY.
- ALL SEAPLANE TKOFS & LDGS MUST BE N OF THE BANDSTAND. ALL TVL S OF THE BANDSTAND MUST NOT EXCEED HEADWAY SPD.
- FOR SEAPLANE PRKG & ICE RWY CONDS CALL 603-271-7398.
- FOR CD CTC BOSTON APCH 603-594-5552.
- TKOF & LDG USING RWY 19W PROHIBITED JAN - MAR.
Runways
- RWY 01W THLD APRXLY 100 FT NE OF FLOATING BANDSTAND.
- RWY 01W/19W HAS ICE IN WINTER PLOWED TO APRXLY 2600 FT. CK NOTAMS FOR ICE RWY CONDS.
Contact
- PUBLIC WATERS OF THE STATE OF NH.
Nearby airports
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Also nearby: NH68 Merrymeeting Lake (private) (3 NM) · 72NH Barndoor Island (private) (5 NM) · 48NH Winter Harbor (private) (7 NM) · 56NH Therriaults Landing (private) (8 NM) · NH64 Mirror Lake (private) (9 NM)
About B18
Alton Bay Seaplane Base & Ice Rwy (B18) is a seaplane base in Alton Bay, NH, at 504 ft MSL. It has 1 runway, the longest 2,600 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for B18, refreshed from the Aviation Weather Center and FAA NASR.
Does B18 have a control tower?
No. Alton Bay Seaplane Base & Ice Rwy is a non-towered (pilot-controlled) seaplane base; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at B18?
Alton Bay Seaplane Base & Ice Rwy has 1 runway; the longest is 2,600 ft. See the Runways section for headings, surface, and lighting.
Where is B18?
Alton Bay Seaplane Base & Ice Rwy is in Alton Bay, NH, at an elevation of 504 ft MSL. Coordinates: 43.4776, -71.2370.
More about B18
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 B18 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.