Seaplane Base
Greenville Junction, Maine

FAA NFDC Information Effective 56-day cycle 03/21/2024 - 5/16/2024

Ops Comms Services Owner Runways IFR Procs Current NOTAMs Remarks


FAA Identifier:21M (Two-One-Mike)
Lat/Lng:45.4783055556, -69.6193055556
45-28-41.9000N, 069-37-09.5000W
Estimated by Faa-Est on 09/07/2010
Elevation:1029 feet Estimated by Owner on 12/04/2002
Magnetic Variation:18W,(2000), [-15W (2024)]
From City: in Greenville Junction


Use:Open to the public
Airspace Analysis:CONDITIONAL
VFR Operations only. All Users Must be in Radio Contact with Each Other Prior to Entering the Traffic Pattern Due to Proximity with Moosehead Aero Marine Spb (52B). All Users Must be in Radio Contact Prior to Takeoff.
Ownership:Privately owned
Attended:May-Oct Every day Daylight hours Nov-Apr Every day UNATNDD (local)
Control Tower:no
ARTCC:Boston(ZBW)Boston Center
NOTAMs and Weather:BGRNOTAM-D service at airport
Wind Indicator:Lighted
Landing Fee:no




Airframe Repair:None
Powerplant Repair:None
Other Services:Beaching Gear

Based Aircraft

Single Engine GA:4

Annual Operations

For year ending:08/13/2021
Local GA (< 20 miles):1000
Non-local GA:100


Owner:Susan Currier
Po Box 351
Greenville Junction, Me 04442
Manager:Roger Paradise
Po Box 351
Greenville Junction, Me 04442



Runway 18W/36W

Length:10000 feet
by Owner on 12/04/2002
Width:3000 feet
Surface:Water, Excellent Condition
Surface Treatment:NONE
End 18W End 36W
True Alignment:179,(164 Magnetic)359,(344 Magnetic)
Right Hand Pattern: Yes
Elevation at End:1029.0' MSL1029.0' MSL
Objects affecting Navigable Airspace (CFR part 77):Utility runway with a visual approachUtility runway with a visual approach
Object Clearance Slope:50:150:1



Additional Remarks

Spb may be Unusbl from Mid-Nov to Mid-may Due to Fall Ice Frmn, Spring Ice Break-Up and Other Adverse Conds. Aircraft may Require Skis Drg Winter Months Due to Frozen Surface Conds. for Spb Conds Call 207-695-2778.
be Alert for Recreational Boats Drg Summer Months and Snowmobiles Drg Winter Months.
150 ft Radio Tower, 200 ft W of Sealane and 150 ft Radio Tower, 1000 ft SW of Sealane.
be Alert: Nearby 52B Moosehead Aero Marine Spb (1.1 Mi East) Utilize Same CTAF 122.9. Mnt 3B1 CTAF 122.8 If Able for Local Traffic.
for Cd Contact Boston ARTCC at 603-879-6859.

This information is current as of the date at the top of the page. These pages are valid for all US airports, based on information from FAA National Flight Data Center. Weather information is provided based on AvnWx Data Sources. NOTAM information is from FAA's NAIMES data portal.

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