USAP Air Post Office: Registered Mail
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Alert
As of midnight, December 20, 2024, the U.S. government is experiencing a lapse in appropriations. Until the situation is resolved, please refer to OPM.gov website regarding the status for federal employees. We expect the U.S. Antarctic Program to remain operational under our contractor for the foreseeable future. Should the situation change, we will post additional information on this website when it is legally permissible to do so.
 

USAP Air Post Office Will No Longer Accept Registered Mail
 

  • Effective September 29, 2009, the U.S. Antarctic Program Air Post Office (APO) will no longer accept registered mail shipments.
     
  • Registered mail shipments in transit before September 29, 2009 will be delivered as intended and will not be returned to sender.