Definitions, as published
The definition of each term exactly as its official source words it, with the article or page it comes from.
| Term slug | Definition text | Citation |
|---|---|---|
| international-flight-stage | Flight stage where the take-off is in one state and the next landing is in another state. | Glossary for transport statistics, 6th edition (2026), F.IV-12, p. 129 |
| direct-flight | Operation of an aircraft on one or more flight stages, using a single flight number, assigned by the airline. | Glossary for transport statistics, 6th edition (2026), F.IV-13, p. 130 |
| non-stop-flight | Direct flight between two airports with no intermediate stops. | Glossary for transport statistics, 6th edition (2026), F.IV-14, p. 130 |
| domestic-flight | Direct flight having exclusively domestic flight stages. | Glossary for transport statistics, 6th edition (2026), F.IV-15, p. 130 |
| international-flight | Direct flight having one or more international flight stages. | Glossary for transport statistics, 6th edition (2026), F.IV-16, p. 130 |
| commercial-air-flight | Air transport flight performed for the transport of passengers and/or freight and mail, for remuneration or for hire. | Glossary for transport statistics, 6th edition (2026), F.IV-17, p. 130 |
| commercial-air-service | Air transport flight or series of flights for the transport of passengers and/or freight and mail, for remuneration or for hire. | Glossary for transport statistics, 6th edition (2026), F.IV-18, p. 130 |
| scheduled-air-service | Commercial air service operated according to a published timetable, or with such a regular frequency that it constitutes an easily recognisable systematic series of flights. | Glossary for transport statistics, 6th edition (2026), F.IV-19, p. 130 |
| non-scheduled-air-service | Commercial air service other than scheduled air service. | Glossary for transport statistics, 6th edition (2026), F.IV-20, p. 130 |
| air-taxi-operation | On-demand and non-scheduled flight on short notice for the carriage by air of passengers, freight or mail, or any combination thereof, for remuneration, usually performed with smaller aircraft including helicopters (typically no more than 30 seats). | Glossary for transport statistics, 6th edition (2026), F.IV-20.1, p. 130 |
| passenger-air-service | Scheduled or non-scheduled air service performed by aircraft carrying one or more revenue passengers and any flights listed in published timetables as open to passengers. | Glossary for transport statistics, 6th edition (2026), F.IV-21, p. 130 |
| all-freight-and-mail-air-service | Scheduled or non-scheduled air service performed by aircraft carrying revenue loads other than revenue passengers, i.e. freight and mail. | Glossary for transport statistics, 6th edition (2026), F.IV-22, p. 130 |
| general-aviation-operations-commercial | All commercial civil aviation operations other than scheduled air services and non-scheduled air transport operations for remuneration or hire. The main categories of commercial general aviation are as follows: a) photographic; b) sightseeing trips; c) advertising; d) agricultural / crop spraying; e) medical / air ambulance trips; f) other commercial operations. | Glossary for transport statistics, 6th edition (2026), F.IV-23, p. 131 |
| general-aviation-operations-non-commercial | All non-commercial civil aviation operations other than scheduled air services and non-scheduled air transport operations for remuneration or hire. The main categories of non-commercial general aviation are as follows: a) state flight: any flight performed by aircraft for military, customs, police or other law enforcement services of a state, along with any flight declared as a ‘state flight’ by state authorities; b) instructional flying; c) private flying; d) business flying; e) parachute and glider launch flights; f) technical stops; g) test flight: a non-commercial flight carried out for the purpose of testing the aircraft prior to placing it in operational service; h) positioning flight: a non-commercial flight carried out to position an aircraft for a scheduled or non-scheduled flight or service; i) other non-commercial operations. | Glossary for transport statistics, 6th edition (2026), F.IV-24, p. 131 |
| flight-number | Primary published flight number assigned by the air transport operator to the flight. Passengers using a flight by an aircraft may be travelling under a range of different flight numbers. Only the active flight number for the flight is in question here. | Glossary for transport statistics, 6th edition (2026), F.IV-25, p. 131 |
| code-sharing | Use of one operator’s flight number for services/flights provided by other operators. | Glossary for transport statistics, 6th edition (2026), F.IV-26, p. 131 |
| block-to-block-time | Total time measured in hours and minutes from the aircraft’s initial move from its departure point until its final stop at its arrival point. | Glossary for transport statistics, 6th edition (2026), F.IV-27, p. 131 |
| aircraft-hours | One hour of aircraft operation. Aircraft hours are measured on the basis of block-to-block time. | Glossary for transport statistics, 6th edition (2026), F.IV-28, p. 131 |
| average-daily-aircraft-utilisation-revenue-hours | Total revenue hours (scheduled plus charter) flown by aircraft type (block-to-block) during a period divided by the related number of aircraft days available. ‘Aircraft days available’ shall be the sum of the number of days each aircraft is available for use during the period in question. The following days should be excluded from the days available: a) days between the date of purchase and the date actually placed in service; b) days after its last revenue flight prior to disposal; c) days out of service due to major accidents or conversion; d) days when an aircraft is in the possession of others or not available due to government action such as grounding by government regulatory agencies . | Glossary for transport statistics, 6th edition (2026), F.IV-29, p. 132 |
| aircraft-kilometres-performed | Sum of the products obtained by multiplying the number of flights performed on each flight stage by the airport-to-airport distance. | Glossary for transport statistics, 6th edition (2026), F.IV-30, p. 132 |
| passenger-seat-available-on-an-aircraft | Unit of measurement representing the total number of passenger seats available for sale on an aircraft operating a flight stage between a pair of airports. | Glossary for transport statistics, 6th edition (2026), F.IV-31, p. 132 |
| seat-kilometre-available-on-a-passenger-aircraft | Unit of measurement representing the movement of seats available on a passenger aircraft when performing the services for which it is primarily intended over one kilometre. | Glossary for transport statistics, 6th edition (2026), F.IV-32, p. 132 |
| tonne-kilometre-available-on-an-aircraft | Unit of measurement representing the movement of one tonne of payload (see F.II-08) available on an aircraft when performing services for which it is primarily intended over one kilometre. | Glossary for transport statistics, 6th edition (2026), F.IV-33, p. 132 |
| automatic-dependent-surveillance-broadcast-ads-b | Surveillance technique that relies on aircraft or airport vehicles broadcasting their identity, position and other information derived from on-board systems (global navigation satellite system, etc.). ## F.V. Air transport measurement | Glossary for transport statistics, 6th edition (2026), F.IV-34, p. 132 |
| air-transport | Movement of goods and/or passengers by an aircraft. | Glossary for transport statistics, 6th edition (2026), F.V-01, p. 132 |
| commercial-air-transport | Movement of goods and/or passengers by a commercial aircraft. | Glossary for transport statistics, 6th edition (2026), F.V-02, p. 133 |
| national-air-transport | Air transport on a domestic flight stage. | Glossary for transport statistics, 6th edition (2026), F.V-03, p. 133 |
| international-air-transport | Air transport on an international flight stage. | Glossary for transport statistics, 6th edition (2026), F.V-04, p. 133 |
| on-flight-origin-and-destination-ofod | Traffic on a commercial air service identified by a unique flight number subdivided by airport pairs in accordance with a point of embarkation and a point of disembarkation on that flight. | Glossary for transport statistics, 6th edition (2026), F.V-05, p. 133 |
| air-passenger | Person, excluding on-duty members of the flight and cabin crews, who makes a trip by air. | Glossary for transport statistics, 6th edition (2026), F.V-06, p. 133 |
| revenue-air-passenger | Commercial passenger for whose transport an air carrier receives commercial remuneration. | Glossary for transport statistics, 6th edition (2026), F.V-07, p. 133 |
| non-revenue-air-passenger | Passengers other than a revenue passenger. | Glossary for transport statistics, 6th edition (2026), F.V-08, p. 133 |
| air-passenger-on-board | Passenger whose flight stage begins or terminates at the reporting airport, including a transfer passenger and a direct transit passenger. | Glossary for transport statistics, 6th edition (2026), F.V-09, p. 133 |
| air-passenger-carried | Passenger whose flight begins or terminates at the reporting airport. | Glossary for transport statistics, 6th edition (2026), F.V-10, p. 133 |
| terminating-passenger | Passenger starting or ending their flight at the designated airport. | Glossary for transport statistics, 6th edition (2026), F.V-11, p. 134 |
| direct-transit-passenger | Passenger who, after a short stop, continues the journey on the same aircraft on a flight having the same flight number as the flight on which they arrive. A passenger who changes aircraft because of technical problems but continues on a flight with the same flight number is also counted as a direct transit passenger. | Glossary for transport statistics, 6th edition (2026), F.V-12, p. 134 |
| transfer-passenger | Passenger arriving and departing on a different aircraft within 24 hours, or on the same aircraft bearing different flight numbers. Each passenger is counted twice: once on arrival and once on departure. | Glossary for transport statistics, 6th edition (2026), F.V-13, p. 134 |
| air-passenger-kilometre-pkm | Unit of measurement representing the transport of one air passenger over a distance of one kilometre. | Glossary for transport statistics, 6th edition (2026), F.V-14, p. 134 |
| passenger-load-factor | Air pkm (see F.V-14) expressed as a percentage of seat-kilometre available in a passenger aircraft (see F.IV-32). | Glossary for transport statistics, 6th edition (2026), F.V-15, p. 134 |
| passenger-kilometres-flown-by-flight-stage | Sum of the products obtained by multiplying the number of passengers carried on each flight stage by the airport-to-airport distance. | Glossary for transport statistics, 6th edition (2026), F.V-16, p. 134 |
| passenger-kilometres-flown-by-on-flight-origin-destination-airports | Product of multiplying the number of passengers flown between two airports as initial origin and final destination by the airport-to-airport distance. | Glossary for transport statistics, 6th edition (2026), F.V-17, p. 134 |
| baggage | Personal property of passengers and crew loaded or carried on board an aircraft by agreement with the operator. | Glossary for transport statistics, 6th edition (2026), F.V-18, p. 134 |
| freight-carried-on-an-aircraft | Property carried on an aircraft other than mail, stores and baggage. | Glossary for transport statistics, 6th edition (2026), F.V-19, p. 134 |
| gross-gross-weight-of-goods-carried-by-air | Total weight of the goods carried, all packaging and the tare weight of the transport unit (e.g. air container). | Glossary for transport statistics, 6th edition (2026), F.V-20, p. 135 |
| gross-weight-of-goods-carried-by-air | Total weight of the goods carried, including packaging but excluding the tare weight of transport units (e.g. air container). | Glossary for transport statistics, 6th edition (2026), F.V-21, p. 135 |
| tare-weight-of-goods-carried-by-air | Weight of a transport unit (e.g. air container) before any cargo is loaded. | Glossary for transport statistics, 6th edition (2026), F.V-22, p. 135 |
| freight-loaded-onto-or-unloaded-from-an-aircraft | Any freight loaded onto or unloaded from an aircraft. | Glossary for transport statistics, 6th edition (2026), F.V-23, p. 135 |
| freight-on-board-an-aircraft | All freight on board an aircraft upon landing at an airport and at take-off from an airport. | Glossary for transport statistics, 6th edition (2026), F.V-24, p. 135 |
| freight-tonne-kilometres-performed-by-flight-stage | Metric tonne of freight revenue load carried one kilometre. Tonne-kilometres performed are obtained by multiplying the total number of tonnes of freight revenue load carried on the flight stage by the airport-to- airport distance. | Glossary for transport statistics, 6th edition (2026), F.V-25, p. 135 |
| freight-tonne-kilometres-performed-by-on-flight-origin-destination-airports | Metric tonne of freight revenue load carried one kilometre. Tonne-kilometres performed are obtained by multiplying the total number of tonnes of freight revenue load carried between two airports as the initial origin and the final destination by airport-to-airport distance. | Glossary for transport statistics, 6th edition (2026), F.V-26, p. 135 |
Sources
- Glossary for Transport Statistics — 6th edition (2026) — Eurostat, UNECE ve ITF-OECD · Reusable with attribution
- UNCTADstat maritime/transport metadata — UN Trade and Development (UNCTAD) / UNCTADstat · Reusable with attribution
- IMO conventions and maritime definitions — official definition clauses and terminology pages — International Maritime Organization (IMO) · Reusable with attribution
- U.S. federal air cargo/security definitions associated with ICAO scope — International Civil Aviation Organization (ICAO); auxiliary U.S. federal regulatory sources · Public domain
- United States federal transport and customs definitions — GPO / Office of Federal Register / PHMSA-DOT / FMCSA-DOT / FMC / CBP-DHS / U.S. Congress · Public domain
- European Union transport and customs definitions — European Parliament and Council instruments; Publications Office of the EU / EUR-Lex · Reusable with attribution
- Hague–Visby Article I via UK legislation.gov.uk — UN Treaty Collection/UN, UNCITRAL, UNECE, ICAO, OTIF ve UK legislation.gov.uk · Reusable with attribution
- BTS/FMCSA/FMC/CBP/MARAD federal-authored glossary rows — BTS; FMCSA; FMC; CBP; MARAD · Public domain
- United Kingdom official transport and customs terms — HMRC; Department for Transport; Traffic Commissioners/DVSA; UK Parliament/legislation.gov.uk · Reusable with attribution
1,049 further records are on file but not shown, because the publisher's terms do not clearly allow them to be republished.