4MN2 · Angle Inlet, Minnesota
Oak Island Seaplane Base
4MN2March 25, 2026 · 4MN2-0325
Operational Summary
- U.S. Customs Service
- Yes
- User Fee
- Unknown
- Office Hours
- Daily24 Hours24/7
Central Time
- Service Hours
- Daily08:00-23:00CT in
Central Time
- Parking
- No Structured Parking Location Extracted Yet
- Permission to Land
- Required
Parking and Inspection
Where to Park
No structured parking facility has been extracted yet.
Inspection Process
- An electronic APIS manifest must be filed for all private and commercial aircraft arrivals and departures in accordance with current regulations and procedures.
- Seaplane operators must land at Oak Island and utilize the CBP ROAM application to complete arrival processes.
- The ROAM application is authorized for seaplane operator use only at limited locations. The use of ROAM for other private and commercial general aviation aircraft is not authorized.
Procedures
Permission to Land
Pilots must secure permission to land by contacting CBP in Warroad, MN prior to departure from the foreign port or place and at least 2 hours in advance of the anticipated arrival time at Oak Island Seaplane Base. Permission to land is granted with a tolerance of (+/-) 30 minutes. If your ETA deviates outside those parameters, Previously granted permission(s) are invalid and you must contact CBP to re-secure permission to land.
Appointment
Unknown- Only seaplanes are processed at this location.
- Seaplanes must land on the water, remain on the water, and not drive onto land. NOTE: For further detailed information regarding national GA processing standards and procedures, please refer to the CBP Private Aircraft Arrival Information Document or contact GAsupport@cbp.dhs.gov March 25, 2025 Publication Number 4MN2-0325 Oak Island Seaplane Base
Departure
- Inspection services for the entrance/ arrival of seaplanes only at Oak Island Seaplane Base are available 7 days per week, 0800-2300 CT in accordance with the port's permission to land procedures. Commercial aircraft operators departing the U.S. must obtain an outbound clearance by contacting CBP directly.
- Only seaplanes are processed at this location.
- Seaplanes must land on the water, remain on the water, and not drive onto land. NOTE: For further detailed information regarding national GA processing standards and procedures, please refer to the CBP Private Aircraft Arrival Information Document or contact GAsupport@cbp.dhs.gov March 25, 2025 Publication Number 4MN2-0325 Oak Island Seaplane Base Pilots must secure permission to land by contacting CBP in Warroad, MN prior to departure from the foreign port or place and at least 2 hours in advance of the anticipated arrival time at Oak Island Seaplane Base. Permission to land is granted with a tolerance of (+/-) 30 minutes. If your ETA deviates outside those parameters, Previously granted permission(s) are invalid and you must contact CBP to re-secure permission to land.
Operator Highlights
- An electronic APIS manifest must be filed for all private and commercial aircraft arrivals and
- Seaplane operators must land at Oak Island and utilize the CBP ROAM application to complete
- Only seaplanes are processed at this location.
- Seaplanes must land on the water, remain on the water, and not drive onto land.
Contacts and Location
Phone
Customs Location Map
3179 Oak IslandOak Island, MN 56741Related Resources for 4MN2
Hours and Availability
Office Hours
- Daily24 Hours24/7
Central Time
Source Wording
7 days per week, 24 hours per day Central Time (CT)
Service Hours
- Daily08:00-23:00CT in
Central Time
Source Wording
Inspection services for the entrance/ arrival of seaplanes only at Oak Island Seaplane Base are available 7 days per week, 0800-2300 CT in accordance with the port's permission to land procedures. Commercial aircraft operators departing the U.S. must obtain an outbound clearance by contacting CBP directly.
Availability
- Inspection services for the entrance/ arrival of seaplanes only at Oak Island Seaplane Base are available 7 days per week, 0800-2300 CT in accordance with the port's permission to land procedures. Commercial aircraft operators departing the U.S. must obtain an outbound clearance by contacting CBP directly.
- Only seaplanes are processed at this location.
- Seaplanes must land on the water, remain on the water, and not drive onto land. NOTE: For further detailed information regarding national GA processing standards and procedures, please refer to the CBP Private Aircraft Arrival Information Document or contact GAsupport@cbp.dhs.gov March 25, 2025 Publication Number 4MN2-0325 Oak Island Seaplane Base
Remarks
- Only seaplanes are processed at this location.
- Seaplanes must land on the water, remain on the water, and not drive onto land. NOTE: For further detailed information regarding national GA processing standards and procedures, please refer to the CBP Private Aircraft Arrival Information Document or contact GAsupport@cbp.dhs.gov March 25, 2025 Publication Number 4MN2-0325 Oak Island Seaplane Base
Nearby Customs Airports Within 250 NM
Warroad, Minnesota
Baudette, Minnesota
Airport Ramp
Int'l Falls, Minnesota
FBO
Pembina, North Dakota
Crane Lake, Minnesota
Grand Forks, North Dakota
AvFlight
Tower, Minnesota
Ely, Minnesota
Fargo, North Dakota
FBO
Duluth, Minnesota
Duluth, Minnesota
Airport Ramp
Grand Marais, Minnesota
Grand Marais, Minnesota
Dunseith, North Dakota
Original Content
3179 Oak Island, Oak Island, MN 56741 General Aviation Airport Fact Sheet Oak Island Seaplane Base (4MN2) Regular Office Hours 7 days per week, 24 hours per day Central Time (CT) Contact Information (218) 386-2796 CBP Warroad Port of Entry Hours of Service for Entrance and Clearance Inspection services for the entrance/ arrival of seaplanes only at Oak Island Seaplane Base are available 7 days per week, 0800-2300 CT in accordance with the port's permission to land procedures. Commercial aircraft operators departing the U.S. must obtain an outbound clearance by contacting CBP directly. Permission to Land Procedures Pilots must secure permission to land by contacting CBP in Warroad, MN prior to departure from the foreign port or place and at least 2 hours in advance of the anticipated arrival time at Oak Island Seaplane Base. Permission to land is granted with a tolerance of (+/-) 30 minutes. If your ETA deviates outside those parameters, Previously granted permission(s) are invalid and you must contact CBP to re-secure permission to land. Inspection Process • An electronic APIS manifest must be filed for all private and commercial aircraft arrivals and departures in accordance with current regulations and procedures. • Seaplane operators must land at Oak Island and utilize the CBP ROAM application to complete arrival processes. • The ROAM application is authorized for seaplane operator use only at limited locations. The use of ROAM for other private and commercial general aviation aircraft is not authorized. Special Procedures/Miscellaneous • Only seaplanes are processed at this location. • Seaplanes must land on the water, remain on the water, and not drive onto land. NOTE: For further detailed information regarding national GA processing standards and procedures, please refer to the CBP Private Aircraft Arrival Information Document or contact GAsupport@cbp.dhs.gov March 25, 2025 Publication Number 4MN2-0325 Oak Island Seaplane Base