AFPD10-18 governs the approval and use of Air Force airfields by foreign state aircraft and related diplomatic clearances.
View AFPD10-18 on armypubs.army.mil
It addresses foreign state aircraft policy, airspace authorization, diplomatic clearance applications, fees, inspections, and use of Air Force airfields. It requires approved clearance procedures and gives AF/A3 responsibility for oversight, centralized processes, and exceptions or waivers.
Navigation in the sovereign airspace of the United States by foreign state aircraft is in accordance with 49 USC §40103, Sovereignty and use of airspace, and must be authorized by the Secretary of State. (paragraph 2)
Foreign state aircraft that land at or fly above the continental United States, its territories, commonwealths and possessions, are required to obtain aircraft diplomatic clearance using the Department of State’s Diplomatic Clearance Application System. (paragraph 2)
Foreign state aircraft are not subject to landing and parking fees (or other available routine use fees) at United States Air Force Active, Guard or Reserve airfields. (paragraph 2)
Foreign state aircraft (those which are diplomatically cleared by the Department of State are not subject to search, seizure, and inspection (including customs and safety inspections) or any other exercise of jurisdiction by the United States Government over such foreign state aircraft, or the personnel, equipment, or cargo on board. (paragraph 2)
With the exception of in-flight emergencies, ensure operation of foreign state aircraft at Air Force airfields is limited to flights in support of official government business. (paragraph 3)