CIQ (customs, immigration, quarantine)
CIQ refers to the border formalities of customs, immigration and quarantine, and to whether an airport can provide them for private flights. Not every airport can: many small fields have no border officers on site, so on international flights you may have to land first at a designated port of entry, or the operator must pre-book officers to attend, often for a fee and with limited hours. Clearing CIQ on a private flight is usually quick, done in the FBO or on the aircraft, but in some countries, notably China, India and parts of Africa, it can take an hour or more. Check the arrival airport's CIQ hours before agreeing on a landing time.