Princeton Municipal Airport

General Aviation Airport Fact Sheet 
Princeton Municipal Airport (KPNN) 
 184 Airport Road, Princeton, ME 04668
Regular Office Hours 
7 days per week, 24 hours per day 
Eastern Time (ET) 
 
 
  
 
 
 
 
Contact Information 
(207) 904-3000   CBP Calais, ME Area Port
KPNN_GAP@cbp.dhs.gov
Hours of Service for Entrance 
and Clearance 
Inspection services for the entrance/
arrival of aircraft at Princeton 
Municipal Airport are available 
Monday-Friday, 0800-1600 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 
prior to departure from the foreign airport and at least two 
hours in advance of the anticipated arrival time at KPNN. 
Permission to land is granted with a tolerance of (+/-) 30 
minutes. If your ETA deviates outside these parameters, 
previously granted permission(s) are invalid and you 
must contact CBP to re-secure permission to land.  
Inspection Process 
• A CBP Officer will meet the aircraft and begin the inspection process.
• All crew and passengers will be processed at the aircraft.
• Be prepared to present passports, visas, pilot’s license, medical certificate, and aircraft registration.
• Regulated waste/garbage will be collected by CBP from the aircraft crew.
• Passengers can depart directly from FIS at the conclusion of their inspection.
Special Procedures/Miscellaneous 
• None.
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 
February 19, 2026 Publication Number KPNN-0226 
Princeton Municipal Airport