St Clair County International Airport

St. Clair County International Airport
General Aviation Airport Fact Sheet 
St. Clair County International Airport (KPHN)
177 Ash Drive, Kimball, MI 48074
Regular Office Hours 
7 days per week, 24 hours per day 
Eastern (ET)  
 
 
  
 
 
 
 
Contact Information 
(810) 985-9541, option 4   CBP Area Port of Port Huron, MI
KPHN_GAP@cbp.dhs.gov
Hours of Service for Entrance 
and Clearance 
Inspection services for the entrance/
arrival of aircraft at St. Clair County 
International Airport are generally 
available 7 days per week, 24 hours 
per day 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 one 
hour prior to departure from the foreign port or place.
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 the CBP port to re-secure permission to land. 
Inspection Process 
• Aircraft should park by the inspectional office near the fuel pumps.
• A CBP Officer will meet the aircraft outside to begin the inspection.
• Be prepared to present passports, visas, pilot’s license, medical certificate, aircraft registration, and
user fee decal (if appropriate).
• Passengers can close out flight plans and depart directly 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 
March 3, 2026 Publication Number KPHN-0326