Customs clearance facilitation for temporary importation at special events: exemptions and procedural requirements for exhibition goods. Customs clearance facilitation at Air Force Station, Yelahanka for Aero India 2025 requires manual filing of arrival and departure manifests and related forms, with exhibition goods and foreign aircraft eligible for duty exemption under ATA Carnet or Notification No. 8/2016 subject to prescribed bonds and conditions; bill of entry, bond presentation, open examination, value appraisal, and approved manual out-of-charge are mandatory, while transhipment, re-export documentation, and ATF fuel monitoring follow specified procedures and verification by the proper officer.