Organizations & Authorities

A specialized agency of the United Nations established by the Chicago Convention (1944) to promote the safe and orderly development of international civil aviation worldwide. ICAO develops Standards and Recommended Practices (SARPs), Procedures for Air Navigation Services (PANS), and guidance material that serve as the foundation for national aviation regulations across its 193 member States.

The Convention on International Civil Aviation, signed in Chicago on 7 December 1944, is the foundational international treaty that established ICAO and set forth the principles governing international air navigation. It affirms that every State has complete and exclusive sovereignty over the airspace above its territory and provides the framework for uniform regulations, standards, and procedures for civil aviation.

Technical specifications adopted by the ICAO Council under Article 37 of the Chicago Convention. A Standard is a specification whose uniform application is recognized as necessary for the safety or regularity of international air navigation and to which States must conform; if a State cannot comply, it must file a difference with ICAO under Article 38. A Recommended Practice is a specification whose uniform application is recognized as desirable but not mandatory.

The 19 technical annexes to the Chicago Convention that contain all ICAO Standards and Recommended Practices (SARPs), organized by subject area. Each Annex covers a specific domain of civil aviation and is periodically amended through the ICAO amendment process. Key annexes for certification professionals include Annex 8 (Airworthiness of Aircraft), Annex 6 (Operation of Aircraft), and Annex 19 (Safety Management).

Annex 1 to the Chicago Convention establishes the international SARPs for the licensing of flight crew members, air traffic controllers, and aircraft maintenance technicians. It defines the minimum requirements for knowledge, experience, skill, and medical fitness that States must implement through their national licensing systems.

Annex 6 to the Chicago Convention establishes the international SARPs for the operation of aircraft in international air navigation. It is divided into three parts: Part I covers international commercial air transport (aeroplanes), Part II covers international general aviation (aeroplanes), and Part III covers international operations of helicopters. It addresses operational requirements including maintenance programs, MEL policy, and crew qualifications.

Annex 8 to the Chicago Convention establishes the broad international SARPs for the airworthiness of aircraft. It defines the obligations of the State of Design and State of Manufacture to certify that aircraft, engines, and propellers meet minimum airworthiness standards. Annex 8 provides the high-level framework that national airworthiness codes (such as 14 CFR Part 25, EASA CS-25, or TCCA AWM 525) implement in detailed technical requirements.

Annex 10 to the Chicago Convention establishes the international SARPs for aeronautical telecommunications, including radio navigation aids, communications systems, surveillance and collision avoidance systems, and aeronautical radio frequencies. It is divided into five volumes covering radio navigation aids, communications procedures, communication systems, surveillance radar and collision avoidance, and aeronautical radio frequency spectrum utilization.

Annex 13 to the Chicago Convention establishes the international SARPs for the investigation of aircraft accidents and incidents. It defines the roles and responsibilities of the State of Occurrence, State of Registry, State of the Operator, State of Design, and State of Manufacture in the investigation process. The sole objective of an investigation under Annex 13 is the prevention of future accidents, not the apportionment of blame or liability.

Annex 14 to the Chicago Convention establishes the international SARPs for the design, operation, and maintenance of aerodromes (airports and heliports). Volume I covers aerodrome design and operations including runway specifications, obstacle limitation surfaces, visual aids, and rescue and firefighting. Volume II covers heliports.

Annex 19 to the Chicago Convention, adopted in 2013, consolidates safety management provisions previously scattered across other annexes into a single framework. It establishes the SARPs for State Safety Programmes (SSP) and requires service providers (airlines, maintenance organizations, airports, air navigation service providers) to implement Safety Management Systems (SMS). It introduces a risk-based, data-driven approach to safety oversight.

Procedures approved by the ICAO Council that supplement the SARPs in the Annexes. PANS documents contain operational procedures considered not yet mature enough for adoption as SARPs, or procedures that are too detailed for inclusion in an Annex. They are published as ICAO Documents (e.g., PANS-OPS Doc 8168, PANS-ATM Doc 4444) and are not subject to the formal difference-notification process that applies to Standards.

The ICAO term for the State having jurisdiction over the organization responsible for the type design of an aircraft, engine, or propeller. The State of Design has continuing airworthiness responsibilities including the issuance and management of the Type Certificate, the publication of mandatory continuing airworthiness information, and the obligation to assist other States in ensuring the continuing airworthiness of aircraft on their registries.

The ICAO term for the State having jurisdiction over the organization responsible for the final assembly and production of an aircraft, engine, or propeller. The State of Manufacture is responsible for ensuring that each produced article conforms to the approved type design and is in a condition for safe operation before issuing an export certificate of airworthiness.

The ICAO term for the State on whose register an aircraft is entered. The State of Registry is responsible for the continuing airworthiness oversight of the aircraft, including ensuring compliance with mandatory airworthiness directives, approval of maintenance programs, and issuance of the Certificate of Airworthiness. An aircraft can only be registered in one State at a time.

The ICAO term for the State in which the operator's principal place of business is located, or if there is no such place of business, the operator's permanent residence. The State of the Operator is responsible for operational oversight, including issuance of the Air Operator Certificate (AOC) and surveillance of the operator's safety management system and operational compliance.

An integrated set of regulations and activities aimed at improving safety at the State level, as defined by ICAO Annex 19. An SSP is managed by the State's civil aviation authority and encompasses four components: State safety policy and objectives, State safety risk management, State safety assurance, and State safety promotion. Each ICAO member State is required to develop and implement an SSP.

A systematic approach to managing safety, including the necessary organizational structures, accountabilities, policies, and procedures, as required by ICAO Annex 19. An SMS is required for service providers including airlines, approved maintenance organizations, certified aerodromes, and air navigation service providers. It consists of four pillars: safety policy and objectives, safety risk management, safety assurance, and safety promotion.

The trade association of the world's airlines, representing approximately 300 airlines that account for over 80% of global air traffic. IATA is an industry body, not a regulatory authority; it develops industry standards, best practices, and audit programs that complement the regulatory frameworks of national authorities. IATA's standardization work covers operations, safety, security, cargo handling, dangerous goods, and passenger services.

An internationally recognized and accepted evaluation system designed to assess the operational management and control systems of an airline. IOSA uses internationally recognized quality audit principles and is structured around eight operational discipline areas including organization and management, flight operations, operational control, aircraft engineering and maintenance, and cabin operations. IOSA registration is a condition of IATA membership.

An audit program for ground handling service providers that creates a standardized assessment framework for ground operations safety and quality. ISAGO covers ground handling activities including aircraft ground handling, passenger handling, cargo and mail handling, and load control. It enables airlines to rely on a single, industry-standard audit rather than conducting individual audits of each ground handler.

The authoritative industry reference manual for shipping dangerous goods by air, published annually by IATA. The DGR translates the ICAO Technical Instructions for the Safe Transport of Dangerous Goods by Air (Doc 9284) into a practical field manual used by shippers, freight forwarders, ground handlers, and airlines. It includes classification criteria, packing instructions, marking and labeling requirements, and documentation procedures.

The civil aviation authority of the United States, operating under the Department of Transportation. The FAA is responsible for the regulation and oversight of civil aviation within the United States, including aircraft certification, airman certification, air traffic management, and airport safety. The FAA's regulatory authority derives from Title 49 of the United States Code, and its aviation safety regulations are codified in Title 14 of the Code of Federal Regulations (14 CFR).

The section of the United States Code of Federal Regulations that contains all federal aviation regulations. Title 14 is titled 'Aeronautics and Space' and is divided into chapters, with Chapter I containing the FAA regulations. These regulations are organized into subchapters and parts covering airworthiness standards, certification procedures, operating rules, maintenance requirements, and other aspects of civil aviation.

The FAA regulation that prescribes procedural requirements for the issuance of type certificates, production approvals, airworthiness certificates, and related approvals for aircraft, aircraft engines, propellers, and articles. Part 21 defines who may apply for certification, what must be shown, and how approvals are issued, amended, and maintained. It is the procedural backbone of the FAA certification system.

The FAA airworthiness standard for normal category airplanes, which encompasses what were previously classified as normal, utility, acrobatic, and commuter category airplanes. Part 23 was comprehensively restructured under Amendment 23-64 (effective August 2017) to adopt a performance-based regulatory approach with four certification levels based on passenger seating and speed. The restructured Part 23 relies on consensus standards (primarily from ASTM International) as means of compliance.

The FAA airworthiness standard containing the detailed type design requirements for transport category airplanes — typically jet-powered commercial aircraft with more than 19 passenger seats or a maximum certificated takeoff weight above 19,000 pounds. Part 25 prescribes structural, performance, flight characteristics, design and construction, powerplant, equipment, and electrical systems requirements. It is one of the most comprehensive airworthiness codes in the world.

The FAA airworthiness standard for normal category rotorcraft, covering helicopters with a maximum weight of 7,000 pounds or fewer and nine or fewer passenger seats. Part 27 prescribes the minimum design, construction, performance, and safety standards for type certification of these rotorcraft.

The FAA airworthiness standard for transport category rotorcraft, covering helicopters that exceed the Part 27 weight or passenger limits. Part 29 prescribes more stringent design and performance requirements appropriate for larger, multi-engine rotorcraft used in commercial operations, including enhanced crashworthiness, performance in engine-inoperative conditions, and more rigorous systems safety requirements.

The FAA airworthiness standard for aircraft engines, covering both reciprocating and turbine engines. Part 33 prescribes requirements for design, construction, testing, and performance including endurance testing, bird ingestion, blade containment, fire protection, and the engine's response to adverse conditions. Engine Type Certificates are issued under Part 33 independently from the airframe's TC.

The FAA airworthiness standard for propellers, establishing minimum requirements for the design, testing, and certification of aircraft propellers. Part 35 addresses structural loads, fatigue evaluation, bird impact, lightning strikes, and functional testing. Like engines, propellers receive their own Type Certificates separate from the airframe.

The FAA regulation prescribing noise standards for the issuance and amendment of type certificates and changes to type design for aircraft. Part 36 defines noise measurement procedures, noise limits for different categories and stages of aircraft, and the requirements for obtaining noise level approvals. Compliance with Part 36 is required as part of the type certification process.

The FAA regulation governing Airworthiness Directives (ADs), which are legally enforceable rules that apply to aircraft, aircraft engines, propellers, and appliances when an unsafe condition exists and that condition is likely to exist or develop in other products of the same type design. ADs prescribe mandatory inspections, modifications, operating limitations, or other corrective actions. Non-compliance with an applicable AD renders an aircraft unairworthy.

The FAA regulation prescribing rules governing the maintenance, preventive maintenance, rebuilding, and alteration of aircraft, engines, propellers, appliances, and component parts. Part 43 defines who may perform maintenance (authorized persons), what constitutes major vs. minor repairs and alterations, the approved data requirements for performing work, and the maintenance record entry requirements including return-to-service documentation.

The FAA regulation establishing the general operating and flight rules for all civil aircraft operations in the United States. Part 91 prescribes rules governing the operation of aircraft, including pilot-in-command responsibilities, equipment requirements, flight rules (VFR/IFR), maintenance requirements for non-commercial operations, and minimum equipment list provisions. Part 91 applies to all operations unless more specific operating rules (Parts 121, 135) apply.

The FAA regulation governing the certification and operations of scheduled air carriers and commercial operators conducting domestic, flag, or supplemental operations. Part 121 prescribes stringent requirements for air carrier certification, crew qualifications, training programs, aircraft performance, maintenance programs (Continuous Airworthiness Maintenance Programs — CAMP), dispatch procedures, and operational control. It is the primary operating rule for major U.S. airlines.

The FAA regulation governing the certification and operations of commuter and on-demand air carriers, including charter operations, air taxi services, and commuter airlines using aircraft with 30 or fewer passenger seats. Part 135 prescribes requirements that are generally less stringent than Part 121 but more stringent than Part 91, covering pilot qualifications, maintenance requirements, aircraft performance, and operational procedures.

The FAA regulation prescribing the requirements for the issuance of repair station certificates, including the personnel, facilities, equipment, and quality system requirements necessary for certificated repair stations to perform maintenance, preventive maintenance, and alterations on aircraft, airframes, engines, propellers, appliances, and components. A Part 145 certificate is required for maintenance organizations performing work for air carriers and commercial operators.

Non-regulatory guidance documents issued by the FAA that describe acceptable means of compliance with 14 CFR requirements. Advisory Circulars are not legally binding, but they carry significant practical weight because they represent methods the FAA has pre-accepted. An applicant may propose an alternative means of compliance to an AC, but must then demonstrate that the alternative provides an equivalent level of safety and obtain FAA agreement.

Internal FAA directives that prescribe policies, assign responsibilities, and establish procedures for FAA employees and designees. Orders (such as FAA Order 8110.4 — Type Certification, and FAA Order 8900.1 — Flight Standards Information Management System) provide the procedural framework within which FAA inspectors and engineers conduct their certification and oversight activities. Policy statements and memoranda supplement orders with specific interpretive guidance.

An FAA field office within the Aircraft Certification Service (AIR) responsible for the type certification, supplemental type certification, and design approval activities for aircraft, engines, propellers, and articles. ACOs are organized geographically into branches with specialization by product type. They serve as the primary FAA engineering interface for design approval applicants.

An FAA field office responsible for the oversight of production approval holders, including Production Certificate holders and TSO Authorization holders. MIDOs conduct conformity inspections, audit production quality systems, issue production approvals, and oversee the airworthiness release process for newly manufactured articles. They are the production-side counterpart to the ACO.

An FAA field office within the Flight Standards Service responsible for the operational certification and oversight of air carriers, air agencies, and airmen. FSDOs issue air carrier certificates, repair station certificates, and pilot certificates; conduct ramp inspections; perform surveillance of certificated operators; and process field approvals for alterations. FSDOs interface with operators on operational and maintenance matters.

An individual appointed by the FAA Administrator to act as a representative of the Administrator in examining, testing, and approving aircraft designs and compliance data. DERs are private-sector engineers who hold FAA designations in specific technical disciplines (e.g., structures, systems, flight test, propulsion) and are authorized to make findings of compliance and approve data on behalf of the FAA. Each DER's authorization is defined by their delegation letter.

An individual appointed by the FAA Administrator to perform examination, inspection, and testing services necessary for the issuance of airworthiness certificates, export airworthiness approvals, and other related functions. DARs may be designated for manufacturing (DAR-F for manufacturing conformity) or for maintenance/alteration (DAR-T for field approval and airworthiness certificate issuance). They supplement FAA inspector capacity.

An authorization granted by the FAA to an organization that allows it to perform specified certification functions on behalf of the FAA through its ODA unit members. The ODA is a more comprehensive form of delegation than individual DER/DAR appointments, enabling the organization to make findings of compliance, issue approvals, and perform conformity inspections within the scope of its authorization. ODA holders manage their own unit members under FAA oversight.

The aviation safety agency of the European Union, headquartered in Cologne, Germany. EASA is responsible for the airworthiness certification of aeronautical products (type certification), the approval of design and production organisations, the development of pan-European aviation safety regulations (Implementing Rules, Certification Specifications, AMC, and GM), and the oversight of EU-wide aviation safety. EASA was established in 2002 and has progressively assumed regulatory responsibilities from national aviation authorities of EU Member States.

Regulation (EU) 2018/1139 of the European Parliament and of the Council, which is the foundational EU legislation establishing the common rules for civil aviation safety in Europe and creating EASA. It defines the essential requirements for airworthiness, environmental compatibility, pilot licensing, air operations, aerodromes, ATM/ANS, and the organizational framework for EASA and national aviation authorities. All EASA Implementing Rules and Certification Specifications derive their legal authority from this regulation.

The EASA Implementing Rule (Commission Regulation (EU) No 748/2012, Annex I) that establishes the certification procedures for aircraft, engines, propellers, parts, and appliances, as well as the requirements for design and production organisations. EASA Part 21 is functionally analogous to FAA 14 CFR Part 21 but differs in structure and process, particularly in its reliance on Design Organisation Approval (DOA) and Production Organisation Approval (POA) as the primary approval mechanisms.

The EASA Implementing Rule (Commission Regulation (EU) No 1321/2014, Annex I) establishing the requirements for the continuing airworthiness of aircraft, including the approval of continuing airworthiness management organisations (CAMO). Part-M covers airworthiness reviews, maintenance programme approval, defect reporting, and the overall framework for keeping aircraft airworthy throughout their operational life.

The EASA Implementing Rule (Commission Regulation (EU) No 1321/2014, Annex Vb) providing simplified continuing airworthiness requirements for light aircraft classified as ELA1 (European Light Aircraft with a maximum takeoff mass of 1,200 kg or less) and ELA2 (up to 2,000 kg). Part-ML offers a proportionate regulatory framework with reduced administrative burden compared to Part-M, while maintaining an adequate level of safety.

The EASA Implementing Rule (Commission Regulation (EU) No 1321/2014, Annex II) establishing the requirements for the approval of organisations engaged in the maintenance of aircraft and aircraft components. Part-145 covers personnel requirements, facilities, tooling, maintenance data, quality systems, and the privileges to issue Certificates of Release to Service (CRS). A Part-145 approval is the European equivalent of an FAA Part 145 repair station certificate.

The EASA Implementing Rule (Commission Regulation (EU) No 1321/2014, Annex Vc) establishing the requirements for organisations managing the continuing airworthiness of aircraft. A CAMO is responsible for ensuring that aircraft remain airworthy, managing maintenance programmes, arranging for maintenance to be carried out by approved organisations, and performing airworthiness reviews. Part-CAMO replaced the CAMO requirements previously contained in Part-M Subpart G.

The collective term for the EASA Implementing Rules governing air operations, contained in Commission Regulation (EU) No 965/2012. This includes Part-ORO (Organisation Requirements for air Operations), Part-ARO (Authority Requirements for air Operations), Part-CAT (Commercial Air Transport), Part-NCC (Non-Commercial operations with Complex motor-powered aircraft), Part-NCO (Non-Commercial operations with Other-than-complex aircraft), and Part-SPO (Specialised Operations).

The EASA Certification Specifications for normal-category aeroplanes, harmonized with FAA 14 CFR Part 23. CS-23 Amendment 5 adopted the restructured performance-based approach matching the FAA's Part 23 Amendment 64, using high-level safety objectives with detailed compliance methods provided through referenced consensus standards. CS-23 covers aeroplanes with a maximum seating configuration of 19 passengers and a maximum certificated takeoff mass of 8,618 kg (19,000 lb).

The EASA Certification Specifications for large aeroplanes (transport category), the European equivalent of FAA 14 CFR Part 25. CS-25 prescribes detailed airworthiness requirements for the design, construction, and performance of large aeroplanes used in commercial air transport. It is extensively harmonized with Part 25, though differences exist in specific requirements, particularly in areas such as ditching, lightning protection, and cabin safety.

The EASA Certification Specifications for small rotorcraft, the European equivalent of FAA 14 CFR Part 27. CS-27 prescribes airworthiness standards for rotorcraft with a maximum weight of 3,175 kg (7,000 lb) or less and nine or fewer passenger seats.

The EASA Certification Specifications for large rotorcraft, the European equivalent of FAA 14 CFR Part 29. CS-29 prescribes airworthiness standards for rotorcraft exceeding the CS-27 weight or passenger limitations, including multi-engine transport rotorcraft used in commercial air transport and offshore operations.

The EASA Certification Specifications for aircraft engines, the European equivalent of FAA 14 CFR Part 33. CS-E prescribes airworthiness standards for the type certification of turbine and reciprocating engines, covering design and construction, endurance testing, ingestion tests, and operational characteristics.

The EASA Certification Specifications for propellers, the European equivalent of FAA 14 CFR Part 35. CS-P prescribes airworthiness standards for the type certification of propellers, covering structural design, fatigue evaluation, functional tests, and environmental considerations.

The EASA Certification Specifications containing the European Technical Standard Orders (ETSOs), which define minimum performance standards for specified articles (components, equipment, parts). An ETSO authorization issued under Part 21 Subpart O certifies that an article meets the applicable ETSO standard. CS-ETSO indexes are largely harmonized with FAA TSOs, with the ETSO number typically corresponding to the equivalent TSO number (e.g., ETSO-C151 corresponds to TSO-C151).

Non-binding standards adopted by EASA to facilitate compliance with the Implementing Rules and Certification Specifications. Acceptable Means of Compliance (AMC) describe methods that EASA has pre-accepted for demonstrating compliance; an applicant following an AMC is presumed to meet the underlying requirement. Guidance Material (GM) provides explanatory and interpretive information to help stakeholders understand the intent of regulations. Neither AMC nor GM are legally binding.

An approval issued by EASA under Part 21 Subpart J to an organisation that has demonstrated its capability to design or make changes to type design for aircraft products. A DOA holder is granted privileges to approve minor changes and minor repairs without prior EASA involvement, and to submit major changes and major repairs for EASA approval with reduced EASA direct involvement. The DOA is central to the EASA certification system as it enables approved design organisations to self-manage significant portions of the compliance demonstration process.

An approval issued by EASA under Part 21 Subpart G to an organisation that has demonstrated its capability to manufacture products, parts, and appliances in conformity with the approved type design data. A POA holder is granted the privilege to issue EASA Form 1 authorised release certificates for new parts and to make statements of conformity for complete aircraft. The POA is the European equivalent of the FAA Production Certificate.

A formal document used by EASA during a certification project to define, discuss, and resolve specific certification issues. CRIs serve multiple purposes: they may propose special conditions, establish interpretive material, document means of compliance agreements, or address specific technical issues that arise during the certification process. CRIs are the EASA counterpart to FAA Issue Papers and are a primary mechanism for communication between EASA and the applicant on certification matters.

The civil aviation authority of Canada, operating as a directorate within Transport Canada. TCCA is responsible for the regulation and oversight of civil aviation in Canada, including aircraft certification, flight operations, personnel licensing, aerodrome safety, and air navigation services. TCCA's regulatory framework is based on the Aeronautics Act and the Canadian Aviation Regulations (CARs).

The body of aviation regulations made under the Canadian Aeronautics Act, administered by Transport Canada Civil Aviation. The CARs are organized into parts covering personnel licensing, flight operations, airworthiness, commercial air services, and aerodromes. They are accompanied by the Canadian Aviation Regulations Standards (CARs Standards), which contain detailed technical standards and are incorporated by reference into the regulations.

The section of the Canadian Aviation Regulations that establishes the procedural requirements for the issuance, amendment, and supplemental type certification of aeronautical products in Canada. CAR 521 defines the application process, certification basis determination, compliance demonstration requirements, and the approval procedures for type certificates, amended type certificates, and supplemental type certificates under TCCA jurisdiction.

The Transport Canada Airworthiness Manual containing the detailed technical airworthiness standards for the type certification of aeronautical products in Canada. The AWM Chapters (500-series) correspond to the FAA airworthiness parts: Chapter 523 (normal category aeroplanes, equivalent to Part 23), Chapter 525 (transport category aeroplanes, equivalent to Part 25), Chapter 527 (normal category rotorcraft, equivalent to Part 27), Chapter 529 (transport category rotorcraft, equivalent to Part 29), Chapter 533 (engines, equivalent to Part 33), and Chapter 535 (propellers, equivalent to Part 35).

Internal policy and procedural documents issued by Transport Canada Civil Aviation to provide direction and guidance to TCCA staff, including aviation safety inspectors and engineers. Staff Instructions prescribe the processes, criteria, and procedures for TCCA staff to follow when processing applications, conducting evaluations, and making regulatory decisions. They are the TCCA equivalent of FAA Orders.

Non-binding guidance documents issued by Transport Canada Civil Aviation to describe acceptable means of compliance with the Canadian Aviation Regulations. TCCA Advisory Circulars serve the same function as FAA Advisory Circulars and EASA AMC: they provide pre-accepted methods of demonstrating compliance, while allowing applicants to propose alternative means.

A delegation mechanism used by TCCA to authorize qualified organizations or individuals to perform design approval functions on behalf of the Minister of Transport. A Design Approval Organization (also abbreviated DAO) is approved to make findings of compliance for specific technical disciplines or product types, sign off on design data, and issue approvals within its scope of delegation. The DAO concept is the TCCA equivalent of the FAA DER/ODA system and the EASA DOA.

An organization approved by TCCA under CAR 561 to manufacture aeronautical products in conformity with the approved type design. A PAO must demonstrate an acceptable quality system capable of ensuring that each product, part, and appliance conforms to its approved design data and is in a condition for safe operation. The PAO is the Canadian equivalent of the FAA Production Certificate holder and the EASA POA holder.

A private, not-for-profit organization that develops consensus-based recommendations and guidance documents for use in aviation communications, navigation, surveillance, and air traffic management systems. RTCA was originally founded as the Radio Technical Commission for Aeronautics in 1935 and operates as a Federal Advisory Committee to the FAA. Its document outputs (DO- documents) are widely referenced in FAA advisory circulars, TSOs, and certification projects as accepted means of compliance.

A European non-profit organisation that develops technical standards and guidance documents for aviation electronics and systems, primarily through its Working Groups (WGs). EUROCAE produces ED- documents that are recognized by EASA and other European authorities as acceptable means of compliance. EUROCAE works jointly with RTCA on many documents to ensure transatlantic harmonization of avionics standards.

A global professional association and standards development organization that develops consensus technical standards, recommended practices, and information reports for the aerospace and automotive industries. In aviation, SAE International produces Aerospace Recommended Practices (ARPs) and Aerospace Standards (AS) that are widely used in certification projects, including ARP4754B (development assurance for aircraft systems), ARP4761A (safety assessment processes), and AS9100 (quality management systems for aviation).

An SAE Aerospace Recommended Practice that provides guidelines for the development of aircraft and aircraft systems, taking into account the overall aircraft operating environment and functions. ARP4754B describes a development assurance process that includes safety assessment, requirements validation, implementation verification, and configuration management. It is widely referenced by FAA and EASA as an accepted means for showing compliance with system-level development assurance requirements.

An SAE Aerospace Recommended Practice that describes guidelines and methods for performing safety assessments on civil aircraft systems and equipment. ARP4761A provides methodologies for Functional Hazard Assessment (FHA), Preliminary System Safety Assessment (PSSA), System Safety Assessment (SSA), Common Cause Analysis (CCA), and other safety analysis techniques. It is used throughout the aircraft development lifecycle to identify hazards, assess risks, and validate that safety requirements are met.

An international standards development organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. In aviation, ASTM's Committee F44 on General Aviation Aircraft and Committee F39 on Aircraft Systems play a central role in developing the consensus standards that support the restructured Part 23 and CS-23 performance-based regulations. ASTM aviation standards provide the detailed technical criteria that the high-level regulatory requirements reference.

The primary guidance document for the development of airborne software, jointly published by RTCA (as DO-178C) and EUROCAE (as ED-12C). DO-178C establishes objectives for software planning, development, verification, configuration management, and quality assurance processes, organized by software assurance level (Design Assurance Level A through E, based on the safety effect of failure). Compliance with DO-178C is the universally accepted means of showing that airborne software has been developed with appropriate rigor.

The primary guidance document for the design assurance of airborne electronic hardware (such as FPGAs, ASICs, and complex circuit board assemblies), jointly published by RTCA (as DO-254) and EUROCAE (as ED-80). DO-254 establishes objectives for hardware planning, design, validation, verification, configuration management, and process assurance, organized by Design Assurance Level. It provides the hardware counterpart to DO-178C's software assurance framework.

The standard defining environmental test conditions and procedures for airborne equipment, jointly published by RTCA (as DO-160, currently revision G) and EUROCAE (as ED-14, currently revision G). DO-160 specifies test categories and procedures for temperature, altitude, humidity, vibration, shock, power input, lightning, EMI/EMC, and other environmental conditions that airborne equipment must withstand. It is universally referenced in FAA TSOs, EASA ETSOs, and type certification programs as the environmental qualification standard for avionics and airborne equipment.