Chicago Convention of 1944

Article 1

Every state has complete and exclusive sovereignty over airspace above its territory.

Article 3 bis

Every other state must refrain from resorting to the use of weapons against civil aircraft in flight.

Article 5

The aircraft of states, other than scheduled international air services, have the right to make flights across state's territories and to make stops without obtaining prior permission. However, the state may require the aircraft to make a landing.

Article 6

No scheduled international air service may be operated over or into the territory of a contracting State, except with the special permission or other authorization of that State. (Scheduled air services)

Article 10

The state can require that landing to be at a designated customs airport and similarly departure from the territory can be required to be from a designated customs airport. (Landing at customs airports)

Article 12

Each state shall keep its own rules of the air as uniform as possible with those established under the convention, the duty to ensure compliance with these rules rests with the contracting state.

Article 13

A state's laws and regulations regarding the admission and departure of passengers, crew or cargo from aircraft shall be complied with on arrival, upon departure and whilst within the territory of that state. (Entry and Clearance Regulations)

Article 16

The authorities of each state shall have the right to search the aircraft of other states on landing or departure, without unreasonable delay.

Article 24

Aircraft flying to, from or across, the territory of a state shall be admitted temporarily free of duty. Fuel, oil, spare parts, regular equipment and aircraft stores retained on board are also exempted from customs duty, inspection fees or similar charges.

Article 29

Before an international flight, the pilot in command must ensure that the aircraft is airworthy, duly registered and that the relevant certificates are on board the aircraft. The required documents are:
1. Certificate of registration
2. Certificate of airworthiness
3. Passenger names, place of boarding and destination
4. Crew licenses
5. Journey Logbook
6. Radio Licence
7. Cargo manifest

Article 30

The aircraft of a state flying in or over the territory of another state shall only carry radios licensed and used in accordance with the regulations of the state in which the aircraft is registered. The radios may only be used by members of the flight crew suitably licensed by the state in which the aircraft is registered.

Article 32

The pilot and crew of every aircraft engaged in international aviation must have certificates of competency and licensees issued or validated by the state in which the aircraft is registered.

Article 33

Certificates of airworthiness, certificates of competency and licensees issued or validated by the state in which the aircraft is registered, shall be recognized as valid by other states. The requirements for the issuing of those certificates or airworthiness, certificates of competency or licensees must be equal to or above the minimum standards established by the Convention. (Recognition of Certificates and Licences)

Article 40

No aircraft or personnel with endorsed licenses or certificate will engage in international navigation except with the permission of the state or states whose territory is entered. Any license holder who does not satisfy international standard relating to that license or certificate shall have attached to or endorsed on that license information regarding the particulars in which he does not satisfy those standards.