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ICAO and Conventions
Air Regulations · Chapter 2

ICAO and Conventions

From Paris to Chicago and the first sixteen Articles

14 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

The Chicago Convention is the constitutional foundation of international civil aviation. Its opening Articles begin with sovereignty, separate civil from State aircraft, and explain the permissions and restrictions that apply when an aircraft crosses a national boundary.

The historical bridge

The Paris Convention of 13 October 1919 was the first broadly international agreement on civil aviation. It created the International Commission for Air Navigation and laid early technical standards. The Chicago Convention, signed on 7 December 1944, superseded that arrangement. India ratified the Chicago Convention, which contains 96 Articles.

Articles 1 to 4, basic legal status

ArticleSubjectOperational meaning
1SovereigntyEvery State has complete and exclusive sovereignty over the airspace above its territory.
2TerritoryTerritory includes land areas and adjacent territorial waters under the sovereignty, protection or mandate of the State.
3Civil and State aircraftThe Convention applies to civil aircraft. Military, customs and police aircraft are State aircraft. A State aircraft needs special authorisation to enter or land in another State, and States must have due regard for civil aviation safety.
4Misuse of civil aviationA Contracting State agrees not to use civil aviation for a purpose inconsistent with the aims of the Convention.

Articles 5 to 16, flight over another State

ArticleRule in plain language
5A non-scheduled international flight may fly across a State and make non-traffic stops, subject to the State's right to require landing, prescribed routes or special permission.
6A scheduled international air service requires special permission or authorisation from the State concerned.
7A State may refuse cabotage, which is carriage for remuneration between two points within its territory by an aircraft of another State.
8A pilotless aircraft may not fly over another State without special authorisation and must be controlled to avoid danger to civil aircraft.
9A State may establish prohibited areas for military necessity or public safety, applied without unjust discrimination.
10A State may require arrival at and departure from a designated customs airport.
11A State's air regulations apply equally to aircraft of all nationalities while within its territory.
12Aircraft must comply with the applicable rules of the air. Over the high seas, the rules established under the Convention apply.
13Entry, clearance, immigration, passport, customs and quarantine laws must be followed on entry, departure and while in the territory.
14States take effective measures to prevent spread of communicable disease by air navigation.
15Public airports and air navigation services are available without nationality discrimination, and charges on foreign aircraft must not exceed those on national aircraft for comparable use.
16Authorities may search another Contracting State's aircraft on landing or departure and inspect Convention documents without unreasonable delay.
Interactive Sovereignty, passage and permission
Selected ruleArticle 1
EffectEach State controls its own airspace
The diagram distinguishes sovereign airspace, non-scheduled passage, scheduled permission, cabotage and pilotless-aircraft authorisation.
Scheduled is differentArticle 5 gives limited privileges to non-scheduled international flights. Article 6 requires permission for a scheduled international air service.

Nationality, facilitation, documents and international standards

15 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

Articles 17 to 42 connect the aircraft to its State, reduce border delays, require essential documents, establish mutual recognition and create the process by which international standards and national differences coexist.

Articles 17 to 28

ArticleSubject and effect
17An aircraft has the nationality of the State in which it is registered.
18An aircraft cannot be validly registered in more than one State at the same time, though registration may be transferred.
19Registration and transfer follow the national law of the registering State.
20Aircraft in international air navigation display nationality and registration marks.
21The registering State supplies ICAO with information concerning ownership and control of registered aircraft.
22States adopt practicable measures to facilitate and expedite international navigation and prevent unnecessary delay.
23Customs and immigration procedures should conform, as practicable, with practices established or recommended under the Convention.
24Aircraft, fuel, oil, spare parts, regular equipment and aircraft stores admitted temporarily receive the stated customs-duty treatment.
25A State undertakes to provide practicable assistance to aircraft in distress within its territory.
26The State of Occurrence institutes an accident inquiry in the defined circumstances and permits the State of Registry to appoint observers.
27An aircraft on a flight cannot be seized merely for violation of patent laws under the Convention conditions.
28States provide airports, radio, meteorological and other air navigation facilities and adopt standard systems as practicable.

Article 29 documents carried in international navigation

  1. Certificate of registration.
  2. Certificate of airworthiness.
  3. Appropriate licences for each crew member.
  4. Journey log book.
  5. Aircraft radio station licence when radio apparatus is fitted.
  6. Passenger list with names, places of embarkation and destination when passengers are carried.
  7. Cargo manifest and detailed declarations when cargo is carried.

Articles 30 to 42

ArticleSubject and effect
30Radio equipment carried in another State is licensed and used according to the State of Registry requirements, and is used by suitably licensed flight crew.
31Internationally navigating aircraft carry a certificate of airworthiness issued or rendered valid by the State of Registry.
32Operating crew hold certificates and licences issued or rendered valid by the State of Registry. A State may refuse to recognise over its own territory a licence granted to its national by another State.
33Certificates and licences are recognised when the issuing requirements equal or exceed the international minimum standards.
34An aircraft in international navigation maintains a journey log book.
35Munitions of war and prohibited items are carried only in accordance with State restrictions.
36A State may prohibit or regulate use of photographic apparatus over its territory.
37States collaborate to secure the highest practicable uniformity, and ICAO adopts international standards, recommended practices and procedures.
38A State unable to comply with an international Standard immediately notifies ICAO of the difference. After an amendment, a State that does not amend its own practice gives notice within 60 days or states its proposed action.
39A certificate or licence not meeting the international requirements carries an endorsement giving full particulars.
40An endorsed aircraft certificate or personnel licence cannot be used in international navigation without permission of the State or States entered.
41The stated airworthiness provisions do not apply retrospectively to certain aircraft or equipment whose prototypes were submitted before the specified three-year point.
42The stated personnel standards do not apply retrospectively to certain licences issued before the specified one-year point, but apply to personnel whose licences remain valid five years after adoption of the standard.
Standard and differenceArticle 38 does not silently erase national law. It creates the duty to notify ICAO when national practice differs from an international Standard.

ICAO objectives, organisation and regional structure

13 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

ICAO is the permanent organisation created by the Chicago Convention. It is a specialised agency linked with the United Nations, but its Assembly, Council, commissions and Secretariat have distinct functions.

Status and objectives

ICAO became a specialised United Nations agency in 1947. Its headquarters is in Montreal, Canada. Bali lists 193 members, including the Cook Islands. Its aims are to develop principles and techniques of international air navigation and foster planning and development of international air transport.

  1. Ensure safe and orderly growth of international civil aviation.
  2. Encourage aircraft design and operation for peaceful purposes.
  3. Encourage development of airways, airports and air navigation facilities.
  4. Meet the need for safe, regular, efficient and economical air transport.
  5. Prevent economic waste caused by unreasonable competition.
  6. Ensure that Contracting State rights are respected and each has a fair opportunity to operate international airlines.
  7. Avoid discrimination between Contracting States.
  8. Promote flight safety in international air navigation.
  9. Promote development of all aspects of international civil aeronautics.

The governing bodies

BodyCompositionFunction
AssemblyAll Contracting States, one member and one vote for each State. It meets not less than once in three years.The highest and sovereign body. It sets broad policy and elects Council States.
Council36 Contracting States elected by the Assembly. The Council elects its President.The permanent governing body responsible to the Assembly. It adopts SARPs and approves PANS and regional procedures.
Air Navigation Commission19 members appointed by the Council.Develops and recommends technical material, including SARPs, for Council action.
Air Transport CommitteeAppointed by the Council.Deals with economic and air transport matters.
Legal CommitteeSpecialist legal body.Studies and prepares international air law matters.
Joint Support CommitteeBetween 9 and 11 members appointed by the Council.Deals with joint support of air navigation services.
Finance CommitteeBetween 9 and 13 members appointed by the Council.Advises on finance.
Committee on Unlawful Interference15 members appointed by the Council.Addresses protection against unlawful interference.
SecretariatHeaded by a Secretary-General appointed by the Council.Provides technical and administrative support through the Air Navigation, Air Transport, Technical Assistance, Legal, and Administration and Services bureaux.
Interactive How ICAO is organised
Selected bodyAssembly
Key factAll Contracting States, one vote each
The organisation chart preserves the reporting line from Assembly to Council and then to technical bodies and the Secretariat.

Regional structure

Seven regional offices serve nine recognised regions. The offices are Bangkok, Cairo, Dakar, Lima, Mexico City, Nairobi and Paris. The nine regions are Africa and Indian Ocean, North America, Asia, Caribbean, North Atlantic, Europe, Pacific, Middle East and South America. Regional Air Navigation meetings periodically consider the operational requirements of defined geographical areas and keep regional plans current.

Adopt or approveThe Council adopts SARPs. It approves PANS and Regional Supplementary Procedures.

The Annexes, PANS and technical publications

15 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

The Annex number is an exam fact, but the publication type is equally important. Annexes contain international SARPs, PANS contain operating procedures, regional procedures apply within specified regions, and manuals provide guidance.

The nineteen Annexes

AnnexSubjectCore scope
1Personnel LicensingLicences, ratings, medical fitness and competency.
2Rules of the AirGeneral, visual and instrument flight rules.
3Meteorological Service for International Air NavigationAviation observations, forecasts, warnings and exchange.
4Aeronautical ChartsChart types, content and presentation.
5Units of MeasurementUnits used in air and ground operations.
6Operation of AircraftInternational commercial air transport, general aviation and helicopter operations.
7Aircraft Nationality and Registration MarksMarks, certificates and registration identification.
8Airworthiness of AircraftCertification and continuing airworthiness principles.
9FacilitationEntry and departure of aircraft, persons, baggage, cargo and mail.
10Aeronautical TelecommunicationsRadio navigation aids, communication procedures and systems, surveillance and radio-frequency use.
11Air Traffic ServicesATC, flight information and alerting services.
12Search and RescueOrganisation, cooperation and assistance to persons in distress.
13Aircraft Accident and Incident InvestigationInvestigation responsibility, process and reporting.
14AerodromesAerodrome design and operations, plus heliports.
15Aeronautical Information ServicesProvision and quality of aeronautical information and data.
16Environmental ProtectionAircraft noise and aircraft engine emissions.
17SecuritySafeguarding civil aviation against acts of unlawful interference.
18Safe Transport of Dangerous Goods by AirClassification and safe carriage of dangerous goods.
19Safety ManagementState safety programmes and safety management systems.

Bali identifies Annexes 2, 5, 7 and 8 as containing international Standards without Recommended Practices, while the other fifteen contain both.

Publication families

PublicationStatus and use
StandardsSpecifications recognised as necessary for safety or regularity and intended for uniform application. A difference must be notified under Article 38.
Recommended PracticesSpecifications recognised as desirable for safety, regularity or efficiency.
PANSCouncil-approved worldwide procedures that may be too detailed, frequently amended or not mature enough for Annex status.
Regional Supplementary ProceduresCouncil-approved procedures with PANS-like status, applicable only in the relevant region. Doc 7030 is the key reference.
Technical manualsGuidance and information amplifying SARPs and PANS and assisting implementation.
Air navigation plansRegional requirements for facilities and services.
ICAO circularsSpecialised information and technical studies for Contracting States.

Core documents and manuals listed by Bali

ReferenceTitle or subject
Doc 4444PANS Air Traffic Management
Doc 7030Regional Supplementary Procedures
Doc 8400ICAO Abbreviations and Codes
Doc 8168Aircraft Operations
Doc 7910Location Indicators
Doc 8585Designators for Aircraft Operating Agencies, Aeronautical Authorities and Services
Doc 8643Aircraft Type Designators
Doc 8126Aeronautical Information Service Manual
Doc 8697Aeronautical Chart Manual
Doc 8896Manual of Aeronautical Meteorological Practice
Doc 7383Aeronautical Information Services Provided by States
Doc 7101Aeronautical Chart Catalogue
Doc 7100Manual of Airport and Air Navigation Facility Tariffs
Doc 7333Search and Rescue Manual
Doc 9432Manual of Radiotelephony
Doc 9137Airport Services Manual
Doc 9426Air Traffic Services Planning Manual
Doc 9674World Geodetic System 1984 Manual
ISO 8402Quality vocabulary standard cited by Bali
Doc 9691Manual on Volcanic Ash, Radioactive Material and Toxic Chemical Clouds
Doc 9433Manual Concerning Interception of Civil Aircraft
Doc 9554Manual concerning military activities hazardous to civil aircraft operations
Doc 9613Performance-based Navigation Manual
Doc 9156Accident or Incident Reporting Manual
Doc 6920Manual of Aircraft Accident Investigation
Doc 9422Accident Prevention Manual
Doc 9342Aerodromes, Air Routes and Ground Aids
Doc 9750Global Air Navigation Plan
Doc 9849Global Navigation Satellite System Manual
Doc 9688Manual on Mode S Specific Services
Doc 8071Manual on Testing of Radio Navigation Aids
Doc 9684Manual on Secondary Surveillance Radar Systems
Doc 9694Manual of Air Traffic Services Data Link Applications
Doc 9981PANS Aerodromes
Doc 10066PANS Aeronautical Information Management
Fast Annex anchorsAnnex 11 is ATS, Annex 14 is aerodromes, Annex 17 is security, Annex 18 is dangerous goods, and Annex 19 is safety management.

The five freedoms of the air

11 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

A freedom of the air is a traffic privilege between States. The first two are technical freedoms. The next three are commercial freedoms and describe where passengers, mail or cargo are put down or taken on.

The two agreements

AgreementPrivilegesIndia in Bali
International Air Services Transit Agreement, 1944First and second freedoms for scheduled international services.Ratified by India.
International Air Transport Agreement, 1944First and second freedoms plus the third, fourth and fifth commercial freedoms.Not ratified by India.

Freedom by freedom

FreedomPrivilegeMemory cue
FirstFly across another participating State without landing.Overfly.
SecondLand in another participating State for non-traffic purposes, such as refuelling or repair.Technical stop.
ThirdPut down traffic in another State that was taken on in the aircraft's State.Carry out from home.
FourthTake on traffic in another State for carriage to the aircraft's State.Carry home.
FifthCarry traffic between two foreign States on a service connected with the aircraft's State.Foreign to foreign, linked to home service.
Interactive Draw each freedom
Selected freedomFirst freedom
PrivilegeOverfly without landing
The aircraft path and traffic arrows show whether the operation is an overflight, technical stop or carriage of traffic.

Cabotage is separate

Cabotage is carriage of passengers, mail or cargo between two points in the same country by an aircraft of another State. Article 7 permits a State to refuse it. Do not confuse cabotage with the fifth freedom, which concerns traffic between different foreign States on a service linked to the airline's home State.

Second freedom carries no traffic rightA fuel or maintenance stop is non-traffic. Loading or unloading passengers, mail or cargo changes the legal character of the operation.

Conventions addressing unlawful acts

14 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

The security conventions form a chain. Tokyo addresses offences and authority on board, The Hague targets unlawful seizure, Montreal targets acts against aviation safety, later instruments extend coverage to airports, explosives and modern threats.

Tokyo Convention 1963

The Tokyo Convention applies to offences against penal law and to acts that jeopardise aircraft safety, persons, property, good order or discipline on board. It generally applies to acts on an aircraft registered in a Contracting State while in flight, over the high seas or outside any State's territory, and excludes military, customs and police aircraft.

The State of Registry is competent to exercise jurisdiction. Another State may intervene in the stated cases, including effects in its territory, an offence by or against its national or permanent resident, an offence against its security, breach of its flight rules, or action needed to meet a multilateral obligation.

Aircraft commander powers

  1. Impose reasonable restraint where there are reasonable grounds to believe that a person has committed or is about to commit a covered offence or act.
  2. Act to protect the aircraft, persons or property, maintain good order and discipline, or enable delivery or disembarkation of the person.
  3. Require or authorise crew assistance. The commander may request or authorise passenger assistance, but cannot require it.
  4. Notify the authorities as soon as practicable, preferably before landing, when a restrained person is on board and state the reasons.

For the general scope, the aircraft is considered in flight from application of power for take-off until the landing run ends. For commander powers, the relevant period begins when all external doors close after embarkation and ends when a door opens for disembarkation, with special continuation after a forced landing until competent authorities take over.

The security treaty chain

InstrumentMain subject
The Hague Convention 1970Suppression of unlawful seizure of aircraft, with severe punishment and extradition or prosecution obligations.
Montreal Convention 1971Suppression of violence on board, destruction or dangerous damage to an aircraft in service, placement of destructive devices, damage to navigation facilities, interference with communications and knowingly false information endangering a flight.
Montreal Protocol 1988Extends protection to airports serving international civil aviation, including serious violence, damage to facilities or aircraft not in service, and disruption of airport services.
Montreal Convention 1991Marking of plastic explosives for detection.
Beijing Convention 2010Updates security law for use of civil aircraft as a weapon, biological, chemical or nuclear weapons and substances, cyber attacks on navigation or safety systems, and organisation or contribution to offences. Bali states that India had not signed and ratified it.
Interactive Security convention timeline
Selected instrumentTokyo 1963
FocusOffences and authority on board
The timeline shows how each later treaty adds a distinct security problem rather than replacing every earlier rule.
Match the name to the actTokyo means on-board offences, The Hague means seizure, Montreal 1971 means safety of civil aviation, and the 1988 Protocol means violence at international airports.

Carrier liability, surface damage and aircraft finance

13 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

A separate treaty chain deals with private rights rather than operational safety. It covers contracts and carrier liability, third-party damage on the surface, and legal interests in financed aircraft.

Warsaw to Montreal 1999

InstrumentPurpose
Warsaw Convention 1929Unifies rules for international carriage of passengers, baggage and cargo, including documentation, carrier liability and jurisdiction.
Hague Protocol 1955Amends the Warsaw system.
Guadalajara Convention 1961Extends the system to carriage performed by a person other than the contracting carrier.
Guatemala City Protocol 1971 and Montreal Protocols 1975Further attempted amendments to the Warsaw system.
Montreal Convention 1999Creates a modern unified liability system intended to replace the fragmented Warsaw chain.
Carriage by Air Act 1972, amended in 2009Provides the Indian statutory framework for the rights and liabilities of air carriers.

Transport documents and liability

Bali notes that the Warsaw system became one of the most widely accepted private-law unifications, with 152 States described as parties in the printed text. A passenger ticket identifies the place and date of issue, departure and destination, agreed stopping places, carrier identity and the applicability of liability rules. Loss or irregularity of the ticket does not itself invalidate the contract of carriage. Checked baggage other than small personal items is covered by a baggage check, with copies for passenger and carrier.

Bali retains a historical 100,000 Special Drawing Rights figure while explaining the earlier liability system, then gives the Montreal 1999 two-tier passenger liability value. Up to 113,100 Special Drawing Rights for injury or death, the carrier cannot defeat the claim by proving absence of negligence. Above that level, the carrier may defend itself by proving that it was not negligent or otherwise at fault. These figures are studied here as Bali's printed examination values.

Ground damage and property interests

InstrumentSubjectIndia in Bali
Rome Convention 1952Liability for damage caused by foreign aircraft to persons or property on the surface, with liability related to aircraft weight and compulsory insurance concepts.Bali states that India had not ratified it.
Montreal Protocol 1978Amends the Rome Convention and extends its treatment to an operator located in another Contracting State.Read with the Rome system.
Geneva Convention 1948International recognition of rights in aircraft bought through hire purchase, lease or mortgage.Protects recognised property interests.
Cape Town Convention and Protocol 2001International interests in mobile equipment applied to aircraft objects, with a prompt and legally certain enforcement system supporting aircraft finance.Bali states that India ratified the Convention and Protocol in 2008.

Denunciation or withdrawal

A State Party withdraws by written notification to the depositary, which is ICAO for the instruments listed by Bali. Tokyo 1963, The Hague 1970, Montreal 1971, Montreal Protocol 1988 and Beijing 2010 use a six-month notice period. Montreal 1999 uses 90 days.

Three different legal problemsWarsaw and Montreal 1999 concern international carriage. Rome concerns damage on the surface. Geneva and Cape Town concern legal interests in aircraft equipment.

Indian organisations in the international system

12 min read
Written fromR.K. Bali, Air Regulations ch 2, with the CAE Oxford Air Law manual for depth, DGCA scope only

International commitments require national institutions. Bali places the Ministry of Civil Aviation above the aviation bodies, identifies DGCA as the safety regulator and describes AAI as the principal airport and air navigation service organisation within its assigned jurisdiction.

Ministry of Civil Aviation

The Ministry formulates national policy and programmes for development and regulation of civil aviation. It administers national aviation legislation and exercises administrative control over attached and autonomous organisations and public-sector aviation bodies.

DGCA functions listed by Bali

  1. Register civil aircraft.
  2. Formulate airworthiness standards and grant certificates of airworthiness.
  3. License pilots, aircraft maintenance engineers and flight engineers, and conduct the required examinations and checks.
  4. License air traffic controllers.
  5. Certify aerodromes and communication, navigation and surveillance facilities.
  6. Grant Air Operator Certificates and regulate Indian and foreign air transport services operating to, from, within and over India, including required clearances.
  7. Carry out the safety-regulatory and accident-prevention functions stated in Bali, while formal independent accident investigation is handled under the current Indian investigation framework.
  8. Process amendments to aviation legislation, Civil Aviation Requirements, Aeronautical Information Circulars and related material, and initiate proposals needed to give effect to international conventions.
  9. Coordinate flexible use of airspace by civil and military agencies and interact with ICAO on additional routes through Indian airspace.
  10. Monitor aircraft noise and engine emissions with reference to Annex 16 and coordinate with environmental authorities.
  11. Promote indigenous aircraft design and manufacture by acting as a catalyst.
  12. Approve dangerous-goods training programmes and issue relevant carriage authorisations.

Airports Authority of India

AAI was formed on 1 April 1995 by merging the International Airports Authority of India and National Airports Authority. Bali lists the following principal functions.

  1. Design, develop, operate and maintain international and domestic airports and civil enclaves.
  2. Control and manage assigned Indian airspace, including accepted responsibilities beyond territorial limits.
  3. Construct, modify and manage passenger terminals.
  4. Develop and manage cargo terminals.
  5. Provide passenger facilities and information systems.
  6. Expand and strengthen runways, aprons, taxiways and other operational areas.
  7. Provide visual aids.
  8. Provide communication and navigation aids, including ILS, DVOR, DME and radar.
  9. Provide air traffic services at airports under its jurisdiction.
  10. Provide aeronautical information services, including AIP, NOTAM, AIRAC and pre-flight information bulletins.

Responsibility map

QuestionPrimary answer in this chapter
Who sets national civil aviation policy?Ministry of Civil Aviation.
Who regulates safety, licensing, airworthiness and operator certification?DGCA.
Who operates and develops assigned airports and provides assigned air navigation services?AAI.
Who represents the international technical framework?ICAO, working through the Convention, Annexes, procedures and its governing bodies.
International to nationalICAO develops the international framework. India implements its obligations through national law, policy, regulation, oversight and service provision.