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Alton Bay Seaplane Base Seaplane Base
B18 · Alton Bay, NH · 504 ft elevation · var 16W · Towered
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
- Yes
- ARTCC
- BOSTON (ZBW)
- Flight service (FSS)
- BANGOR
- NOTAM facility
- BGR
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1994/02
- Distance from city
- 2 N
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-20
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:28 AM | 08:28Z |
| Sunrise | 05:04 AM | 09:04Z |
| Sunset | 08:29 PM | 00:29Z |
| Evening civil twilight Loggable night begins | 09:05 PM | 01:05Z |
Loggable night (§1.1)
09:05 PM → 04:28 AM
Night currency (§61.57)
09:29 PM → 04:04 AM
Plan a flight from B18
Runway 01/19
2,600 ft × 100 ft · WATER-E 01
- Heading
- n/a
19
- Heading
- n/a
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| CON · Concord | VORTAC | 112.90 | r059° / 21.4 NM |
| ENE · Kennebunk | VORTAC | 117.10 | r294° / 27.4 NM |
| PSM · Pease | VORTAC | 116.50 | r339° / 29.5 NM |
| MHT · Manchester | VOR-DME | 114.40 | r024° / 37 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Ownership & management
Owner
STATE OF NEW HAMPSHIRE
NHDOT, AERONAUTICS, 7 HAZEN DR, CONCORD, NH
603-271-2552
Manager
JASON LEAVITT
7 HAZEN DR, PO BOX 483, CONCORD, NH
603-545-2315
Remarks FAA
- VFR USE ONLY.
- 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.
- PUBLIC WATERS OF THE STATE OF NH.
- 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.
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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.