Language without the jargon
Aviation terms
Fifty plain-language teaching explanations. These are not formal legal definitions; read the linked official source in its own context.
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ICAO
International Civil Aviation Organization
The United Nations specialized agency through which states cooperate on international civil aviation and develop common frameworks.
Context: Its work includes standards, recommended practices and supporting material. States and other bodies have their own implementation responsibilities.
Do not confuse with: ICAO is not the airline, airport operator or licensing authority for every individual.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
SARPs
Standards and Recommended Practices
Two distinct kinds of ICAO provision, published in Annexes to the Chicago Convention.
Context: Identify which kind of provision you are reading and the applicable implementation context.
Do not confuse with: A Standard, Recommended Practice, note and guidance paragraph do not all have the same status.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
PANS
Procedures for Air Navigation Services
ICAO procedural material that complements the international framework in the Annexes.
Context: PANS-ATM is a familiar example in air traffic management.
Do not confuse with: PANS are not simply another name for Annex Standards; read the document’s status and local implementation context.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
SSP
State safety programme
The state-level framework for managing civil aviation safety through coordinated activities and responsibilities.
Context: It connects state safety objectives, oversight and other safety-management functions.
Do not confuse with: An SSP belongs at state level; an organization’s SMS is a related but different layer.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
SMS
Safety management system
An organized approach to managing safety within an organization, including responsibilities, processes and learning from evidence.
Context: An SMS connects hazard information, risk controls and monitoring rather than relying only on a manual.
Do not confuse with: A reporting form alone is not an SMS, and an SMS is not a promise of zero risk.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
Airworthiness
Airworthiness
A concept concerning an aircraft’s conformity with the applicable approved basis and its condition for safe operation.
Context: Design approval, certification, maintenance and continuing responsibilities all contribute to the wider subject.
Do not confuse with: A completed maintenance task does not by itself answer every airworthiness question.
See this term in context- FAA Aircraft Certification — US example; design/production/airworthiness distinctions
Edition
Edition
An identified published version of a document.
Context: The edition is part of the source identity, alongside amendments and the relevant dates.
Do not confuse with: A newly downloaded file can still be an old edition.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
Amendment
Amendment
A formally identified change to an existing document or instrument.
Context: Check which amendments are incorporated and when relevant provisions apply.
Do not confuse with: The same edition title can appear on copies with different amendment states.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
Applicability
Applicability
The circumstances and date from which a provision is intended to apply.
Context: Ask both “when?” and “to whom or what?” when checking a requirement.
Do not confuse with: Publication, adoption, effectiveness and applicability are not necessarily the same date.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
ATC
Air traffic control
A service concerned with organizing and separating relevant air traffic within its assigned scope.
Context: Tower, approach and area control are different settings within the broader system.
Do not confuse with: Not all air traffic services are air traffic control, and a controller is not the pilot of the aircraft.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
- FAA Aviation Careers — US authority role examples only
ATM
Air traffic management
The wider coordination of traffic services, airspace and traffic flows to support the movement of aircraft.
Context: It involves people, procedures, information and technical systems.
Do not confuse with: ATM is broader than a controller speaking on a radio.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
ATS
Air traffic services
A family of services that includes air traffic control, flight information and alerting functions.
Context: The service provided depends on the applicable system and circumstances.
Do not confuse with: ATS and ATC overlap, but the abbreviations are not interchangeable.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
CNS
Communications, navigation and surveillance
The technical functions that help aviation participants exchange information, determine position and observe traffic.
Context: Ground, aircraft and space-based components may contribute to these functions.
Do not confuse with: CNS describes functions and systems, not a single device or a separate type of pilot.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
- FAA Aviation Careers — US authority role examples only
ATSEP
Air traffic safety electronics personnel
Personnel involved in the technical support of equipment and systems used by air navigation services.
Context: Work can involve communications, navigation, surveillance or related systems.
Do not confuse with: ATSEP and air traffic controller are different work families; titles and competence arrangements vary.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
- FAA Aviation Careers — US authority role examples only
AIS
Aeronautical information service
The service responsible for providing aeronautical information needed by aviation users.
Context: Publications, notices and charts are familiar outputs in the information chain.
Do not confuse with: AIS is not merely a map publisher: information origin, quality and controlled change matter.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
AIM
Aeronautical information management
The management of aeronautical data and information as connected, quality-controlled resources.
Context: It emphasizes the data lifecycle and exchange between people and systems.
Do not confuse with: The move from AIS to AIM is not just replacing paper with a PDF.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
MET
Meteorology; aviation meteorological services
Weather observation, forecasting and related information used in aviation.
Context: Weather specialists serve pilots, dispatchers, airports and air navigation organizations.
Do not confuse with: A forecast describes expected conditions and uncertainty; it is not a guarantee of what will occur.
See this term in context- WMO Services for Aviation — Meteorology service and professional scope
ANSP
Air navigation service provider
An organization that provides one or more air navigation services.
Context: The provider may operate traffic services and associated technical or information functions.
Do not confuse with: An ANSP is not automatically the national regulator; organizational arrangements differ.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
NOTAM
NOTAM; notice about aeronautical information
A time-sensitive aeronautical notice about a facility, service, procedure or hazard relevant to operations.
Context: It is one part of the official aeronautical information system.
Do not confuse with: A general learning website or news report is not an operational NOTAM service.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
AIP
Aeronautical information publication
An official publication containing aeronautical information of enduring significance for air navigation.
Context: Changes and supplements form part of the wider publication system.
Do not confuse with: An AIP and a NOTAM serve different information needs; one does not eliminate the need for the other.
See this term in context- EASA ATM/ANS provision of services — EU official index; provision/applicability review still required
OCC
Operations control centre
A place or function where an operator coordinates its operational picture and supporting teams.
Context: Flight status, aircraft availability, crew and disruption information may come together here.
Do not confuse with: An airline OCC is not an air traffic control centre, and its organization varies.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Dispatch
Flight dispatch
Planning and flight-support work that connects operational information with the conduct of a flight.
Context: The dispatcher or flight operations officer may work closely with flight crew and the OCC.
Do not confuse with: The legal division of responsibility differs by jurisdiction and operator; a generic job description is not a rule.
See this term in context- IATA subject areas — Industry subject scope; not binding law
- ICAO training catalogue — Global orientation; catalogue only
Cabin crew
Cabin crew
Crew members whose assigned work centres on cabin safety and the people on board, alongside service duties.
Context: They coordinate with the flight deck and ground teams throughout an operation.
Do not confuse with: Cabin crew work is not limited to hospitality.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Load control
Load control
The coordinated information and planning function concerning an aircraft’s load and its distribution.
Context: It connects passenger, baggage, cargo and aircraft information with the operator’s controlled processes.
Do not confuse with: It is not simply counting bags, and this teaching definition is not a weight-and-balance procedure.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Type certification
Type certification
The approval process concerned with an aircraft or other product design against the applicable certification basis.
Context: It addresses the design, supported by evidence and oversight.
Do not confuse with: Approval of a design is different from production approval or the certification of an individual aircraft.
See this term in context- FAA Aircraft Certification — US example; design/production/airworthiness distinctions
Production approval
Production approval
Approval associated with an organization’s ability to produce products in conformity with an approved design.
Context: It connects manufacturing controls, quality and conformity.
Do not confuse with: A factory’s production approval is not a substitute for approving the design itself.
See this term in context- FAA Aircraft Certification — US example; design/production/airworthiness distinctions
Continuing airworthiness
Continuing airworthiness
The continuing processes and responsibilities intended to keep an aircraft airworthy during its operating life.
Context: Planning, records, maintenance and responses to mandatory information can all matter.
Do not confuse with: It is broader than an individual repair or inspection, and responsibilities depend on the applicable framework.
See this term in context- FAA Aircraft Certification — US example; design/production/airworthiness distinctions
MRO
Maintenance, repair and overhaul
A common industry label for organizations and activities supporting aircraft and components in service.
Context: An MRO business may have a narrow specialization or a broad range of capabilities.
Do not confuse with: The acronym alone does not establish an organization’s approved scope or anyone’s sign-off privileges.
See this term in context- IATA subject areas — Industry subject scope; not binding law
- FAA Aircraft Certification — US example; design/production/airworthiness distinctions
Avionics
Avionics
The electronic systems used on aircraft, such as communications, navigation and flight-related systems.
Context: Avionics work spans design, integration, testing and maintenance.
Do not confuse with: Aircraft avionics and ground-based CNS infrastructure interact, but they are not the same equipment set.
See this term in context- FAA Aircraft Certification — US example; design/production/airworthiness distinctions
- FAA Aviation Careers — US authority role examples only
Aerodrome
Aerodrome
An area intended for aircraft arrival, departure and movement, together with relevant facilities.
Context: “Airport” is a familiar everyday term, while formal scope depends on the applicable source.
Do not confuse with: Do not assume every aerodrome has a passenger terminal or scheduled airline service.
See this term in context- ACI global airport training — Airport functional scope
Airside
Airside
The airport areas associated with aircraft operations and their supporting controlled-access activities.
Context: Runways, taxiways and aprons are central examples in a simple airport map.
Do not confuse with: The precise boundary and access rules are local; this term does not grant access.
See this term in context- ACI global airport training — Airport functional scope
Landside
Landside
The airport’s surface-access and public-facing side outside the main aircraft-operating area.
Context: Roads, parking and some passenger-processing spaces connect the airport to the wider transport network.
Do not confuse with: Landside does not mean every area is unrestricted; terminal security boundaries still matter.
See this term in context- ACI global airport training — Airport functional scope
Apron
Apron
An area used for aircraft parking and activities such as passenger, baggage, cargo or servicing interfaces.
Context: “Ramp” is often used in everyday industry language for related areas and work.
Do not confuse with: An apron is not a runway, and its local operating arrangements require authorized training.
See this term in context- ACI global airport training — Airport functional scope
Ground handling
Ground handling
The range of ground services that support an aircraft, its passengers, baggage or cargo.
Context: Different organizations may provide different parts of a turnaround.
Do not confuse with: Ground handling is broader than baggage loading and is not identical to airport ownership or operation.
See this term in context- IATA subject areas — Industry subject scope; not binding law
- ACI global airport training — Airport functional scope
GSE
Ground support equipment
Equipment used on the ground to support aircraft and related handling activities.
Context: The category can include vehicles and stationary equipment with different functions.
Do not confuse with: Knowing the acronym does not establish competence or authorization to operate any equipment.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Air cargo
Air cargo
Goods transported by air as part of a wider logistics journey.
Context: Cargo may travel on dedicated freighters or in suitable capacity on passenger aircraft.
Do not confuse with: An air shipment also involves ground movement, information and handling; the flight is only one stage.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Freight forwarder
Freight forwarder
A business that arranges transport and associated logistics services for a shipper.
Context: It connects customers with carriers, handlers and other specialists.
Do not confuse with: A forwarder does not necessarily operate an aircraft or perform every handling task itself.
See this term in context- IATA subject areas — Industry subject scope; not binding law
ULD
Unit load device
An aircraft container, or an aircraft pallet with its associated net, used to group and restrain a load.
Context: ULDs connect cargo or baggage handling with the aircraft’s approved loading arrangements.
Do not confuse with: An ordinary warehouse pallet is not automatically an aircraft ULD; suitability and handling are controlled matters.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Dangerous goods
Dangerous goods
Articles or substances that can pose specified risks in transport and are subject to particular transport controls.
Context: Some familiar everyday products can fall within this subject.
Do not confuse with: This glossary cannot classify a shipment or tell you how to pack, label, accept or transport it.
See this term in context- IATA subject areas — Industry subject scope; not binding law
- ICAO training catalogue — Global orientation; catalogue only
Cold chain
Cold chain
A coordinated logistics system intended to keep temperature-sensitive goods within their specified conditions.
Context: It depends on packaging, facilities, transport, monitoring and handovers.
Do not confuse with: A refrigerated room alone does not establish an intact cold chain across the whole journey.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Leasing
Aircraft leasing
An arrangement allowing use of an aircraft under agreed contractual terms rather than simply buying it outright.
Context: Commercial, technical and operational responsibilities depend on the lease and applicable rules.
Do not confuse with: Ownership, operation and maintenance responsibility are different questions; this is not contract advice.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Insurance
Aviation insurance
A contractual way of transferring specified financial risks in exchange for a premium, subject to policy terms.
Context: Aviation insurance can involve different assets, activities and liabilities.
Do not confuse with: Insurance does not remove the underlying hazard, and a policy does not cover every possible loss.
See this term in context- IATA subject areas — Industry subject scope; not binding law
SAF
Sustainable aviation fuel
An umbrella term for aviation fuels meeting relevant sustainability and technical criteria, assessed in a defined framework.
Context: Environmental comparisons need a stated lifecycle boundary, production pathway and evidence.
Do not confuse with: “Sustainable” does not mean zero emissions at the aircraft exhaust or that every alternative fuel is equivalent.
See this term in context- ICAO environmental operational improvements — Environmental scope; no project benefit verification
Aircraft noise
Aircraft noise
Sound associated with aircraft activity and its effects on people and places.
Context: Assessment can involve measurement, modelling, flight patterns and community experience.
Do not confuse with: A single average number does not describe every person’s experience or every location.
See this term in context- ICAO environmental operational improvements — Environmental scope; no project benefit verification
General aviation
General aviation
A broad civil-aviation category distinct from commercial air transport and aerial-work categories in common ICAO usage.
Context: It includes varied activities and aircraft; everyday national usage can be broader or different.
Do not confuse with: Not every small aircraft is general aviation, and not every helicopter mission falls into the same operational category.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
Business aviation
Business aviation
Use of aviation to support business purposes, through a range of ownership and operating arrangements.
Context: An in-house flight department and a charter service can both support business travel.
Do not confuse with: A business purpose does not by itself define the legal operating category or permit commercial carriage.
See this term in context- IATA subject areas — Industry subject scope; not binding law
Rotorcraft
Rotorcraft
Aircraft that obtain their principal lift from one or more rotors.
Context: Helicopters are a familiar rotorcraft type, used in transport and many specialist settings.
Do not confuse with: Rotorcraft is not a synonym for all aircraft capable of vertical take-off; aircraft categories matter.
See this term in context- FAA Aircraft Certification — US example; design/production/airworthiness distinctions
UAS
Uncrewed aircraft system; also termed unmanned aircraft system in official sources
The aircraft without an onboard pilot together with the associated elements needed for its operation.
Context: The system perspective includes control and communication elements rather than only the flying vehicle.
Do not confuse with: “Drone” is a common informal term; it does not establish the operating category or required permissions.
See this term in context- FAA UAS Getting Started — US official pointer; change-sensitive
RPAS
Remotely piloted aircraft system
A remotely piloted aircraft together with its associated control and communication elements.
Context: The term emphasizes a remote pilot within the system.
Do not confuse with: RPAS is not interchangeable with every autonomous system or every use of the broader UAS label.
See this term in context- ICAO training catalogue — Global orientation; catalogue only
- FAA UAS Getting Started — US official pointer; change-sensitive
AAM
Advanced air mobility
An umbrella for developing aviation transport concepts that combine new aircraft, technologies and operating models.
Context: Aircraft approval, infrastructure, airspace integration and community needs all shape actual services.
Do not confuse with: A demonstration, announcement or prototype is not proof that a service is approved or widely available.
See this term in context- FAA Advanced Air Mobility — US emerging-mobility overview; maturity caveats