Aviation Law

Aviation Law refers to the totality of national and international legal rules that regulate legal relationships and activities arising from the use of airspace through aircraft. This branch of law has evolved in parallel with technological advancements, particularly since the early 20th century, and has now developed a distinct structure of its own.

Scope

In legal doctrine, aviation law is addressed in two distinct senses: narrow and broad.

Narrow Sense of Aviation Law

It is defined as the set of rules regulating legal relationships arising from the use of airspace through aircraft. This definition covers only air navigation and direct aviation activities, as well as their consequences.

Broad Sense of Aviation Law

It encompasses all legal relationships resulting from the use of airspace in any manner whatsoever. Under this approach, regulations concerning radio, telegraph, and radio wave transmission, meteorological activities, and even measures to prevent air pollution are also included within this field.

Today, when the terms “air law” or “aviation law” are used, the narrow definition is generally accepted. Although debates exist in the literature regarding the terms “aviation law” (aviation law) and “air law” (air law), both terms are commonly used in texts addressing legal issues arising from aviation activities.

Historical Development

The history of legal regulations concerning aviation activities is as old as the activities themselves. Early human attempts at flight generated fear and concern among authorities, leading to the first regulations being focused on safety and prohibition.

International Development

One of the earliest legal regulations concerning aviation was the 1784 ban on unauthorized balloon flights issued by the Paris Police Commissioner. In 1909, following Blériot’s crossing of the English Channel, Britain enacted the “Aerial Navigation Act,” imposing strict rules on air travel and prohibiting flights in certain areas.

The international nature of aviation created a need for global regulation. As a result, the first text establishing the foundation of international air law was the Paris Convention, signed on 13 October 1919. This convention affirmed that every state has absolute and exclusive sovereignty over its airspace.

The most fundamental document defining the current legal framework of international civil aviation is the Chicago Convention of 7 December 1944. This convention established the International Civil Aviation Organization (ICAO) and regulated the fundamental principles of international civil aviation.

Development in Türkiye

The first legal regulation concerning aviation activities in Türkiye was the **“Regulation on Prohibited Areas for Air Travel”** dated 22 May 1330 (1914). This regulation established the rules foreign nationals had to follow when seeking to enter Ottoman territory by air. It required travelers to obtain prior permission, submit photographs of the aircraft and crew, declare the type, shape, and color of the aircraft, and follow routes designated by the authorities. This regulation prioritized national security concerns.

During the Republican period, the “Air Navigation Instructions” dated 9 September 1925 were adopted. This instruction contained more public law-oriented regulations concerning air boundaries, prohibited zones, flight rights, and rules regarding military and civil aircraft.

The administrative organization and legal framework for civil aviation in Türkiye have developed over time as follows:

• 1933: The “State Air Transport Administration” was established by Law No. 2186.
• 1939: The “General Directorate of Air Transport” was created within the Ministry of Communications (Ministry of Transportation).
• 1954–1956: Civil aviation activities were separated according to their nature, leading to the establishment of the “Directorate of Civil Aviation” (1954), “Turkish Airlines Corporation” (1956), and “General Directorate of State Airports Operation” (1956), all under the Ministry of Transportation.
• 1983: With Law No. 2920 dated 14 October 1983, the sector was opened to private enterprise, marking a step toward liberalization.
• 2005: Law No. 5431 dated 10 November 2005 established the General Directorate of Civil Aviation, a public legal entity with a special budget under the Ministry of Transportation, creating a modern administrative structure for the regulation and oversight of the sector.

Theoretical Approaches and Position within the Legal System

Due to the diversity of relationships it regulates, aviation law cannot be easily classified within the classical system of law.

Position Among Legal Branches and Autonomy

Aviation law is considered a mixed branch of law because it incorporates elements of both public and private law. It contains provisions drawn from civil law, obligations law, commercial law, criminal law, administrative law, and the law of states. Therefore, the view that air law possesses complete autonomy separate from other branches of law is debatable. Nevertheless, like maritime law, the unique nature of its subject matter and the specific characteristics of its instruments (aircraft) necessitate the creation of specialized rules. This situation grants it a sui generis (unique) character.

Distinction Between Public and Private Law

The distinction between public and private law in aviation law is not clear-cut, and the two areas are deeply intertwined.

• Public Law Aspect: State sovereignty over airspace, regulation of air navigation for public order and security, registration of aircraft, licensing of pilots, and relationships between the state and carriers are characterized by public law.

• Private Law Aspect: Matters such as carriage contracts between carriers and passengers or shippers, ownership, pledges, or insurance of aircraft, and liability arising from damage to third parties fall within the domain of private law.

Key Characteristics

Several key characteristics distinguish aviation law from other branches of law:

International Character

By its very nature, aviation law has an international character. The ability of aircraft to cross national borders rapidly, the fact that a single flight may involve the laws of multiple states, and the international nature of even the earliest scheduled routes are the primary reasons for this. This has made it necessary for legal regulations to go beyond national levels and require international harmonization.

Political Character

Because airspace and aircraft are of great importance to national security, foreign policy, and economic interests, aviation law inevitably exhibits a political character. Issues such as state sovereignty over airspace, allocation of air traffic rights, and regulation of civil aviation activities are outcomes of political and strategic decisions.

Sources of Air Law and Important Instruments

International Sources

The primary sources of international aviation law are:

International Treaties

• Paris Convention (1919): The first foundational instrument establishing state sovereignty over airspace.
• Chicago Convention (1944): Recognized as the constitution of modern international civil aviation and established ICAO.
• Warsaw Convention (1929): The principal instrument regulating carrier liability in international air transport.
• Montreal Convention (1999): Modernized the Warsaw system and updated the liability regime for passenger and cargo transport.
• Cape Town Convention (2001): Regulates international interests in aircraft financing.
• International Customary Rules: Rules that have developed over time through state practice and acquired legal binding force.

International Organizations

• ICAO (International Civil Aviation Organization): Issues annexes to the Chicago Convention, establishing international standards and recommended practices.
• IATA (International Air Transport Association): Plays a role in developing commercial and operational standards among airline companies.

National Sources (Türkiye)

• Law No. 2920 on Turkish Civil Aviation: The primary legal regulation in the sector.
• Law No. 5431 on the Organization and Duties of the General Directorate of Civil Aviation: Provides the legal basis for the civil aviation authority.
• Regulations and Instructions: Subordinate regulations issued by the General Directorate of Civil Aviation to implement laws (e.g., SHT-IHA).

Areas of Application

Competition Law

The liberalization of the air transport sector has brought the effective application of competition law rules to the forefront. In the European Union and Türkiye, agreements between airlines, mergers and acquisitions, and abuse of market dominance are monitored by competition authorities. In this context, defining the relevant market (typically based on origin-destination pairs or routes), group exemptions, and slot allocation are crucial issues.

Unmanned Aerial Vehicles (UAVs) Law

Technological advances have led to widespread use of UAVs (drones) in both civilian and military domains, bringing new legal challenges. The legal status of UAVs (whether they are classified as aircraft), their integration into airspace, and flight safety are regulated at both national and international levels. While Article 8 of the Chicago Convention refers to “unmanned aircraft,” in Türkiye, instructions issued by the General Directorate of Civil Aviation (SHT-IHA) define operational procedures and principles in this field.

Other Areas

Other areas within the scope of aviation law include:

• Air Carriage Contracts: Rights and obligations of parties in passenger and cargo transport.
• Carrier Liability: Legal liability of carriers in cases of accidents, delays, or loss of baggage.
• Aircraft Registration and Ownership: Registration, nationality, and proprietary rights over aircraft.
• Flight Safety and Security: Airworthiness standards, airport security, and prevention of unlawful acts.
• Air Traffic Rights: Traffic rights and slot allocations determined under bilateral air transport agreements.