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• A La Carte Offer Item Contains one Service (excluding flights) or Service Bundle which is priced per unit. A La Carte Offer Items are optional, and the quantities of these can be selected for any of the eligible passengers and segments. #EndOfDef# These are offer items within a standalone Offer supplementing regular offers with ancillaries for the same passengers and segments. This enhances the shopping basket concept. The main purpose of this structure is to reduce the size of the message by proposing Offer Items which are applicable to multiple flight-related Offers defined above.
• ACARS Aircraft Communications Addressing and Reporting System. A digital datalink system for transmission of short, relatively simple messages between aircraft and ground stations.
• Accompanied When used for children and infant fares, this shall mean the child/infant must be accompanied by an adult paying an applicable adult fare or traveling at industry free or reduced fare tickets
• Account An arrangement by which a body holds funds on behalf of a client.
• Accountable Document A validated official document (such as an airline ticket, check, or payment voucher) that has a monetary value and must be accounted for. Examples in IATA standards include “Accountable Traffic Documents” listed in Resolution 781 (electronic ticket, EMD, etc.). Further classification of “Accountable Documents” is given in RP 1720a.
• ACI (see “Airports Council International“)
• Activity The condition in which things are happening or being done.
• Ad Hoc Schedule A variation, addition or cancellation from the basic schedule of one or more flights on single dates.
• Administrating Carrier The airline that has the financial and commercial responsibility of a flight and that may or may not be the Operating Carrier.
• Adult For Tariff purposes, a person who has reached his/her 12th birthday as of the date of commencement of travel
• Adult Fare The fare for a person who has attained his twelfth birthday.
• Advance Passenger Information Passenger data which must be collected by airlines and communicated to the destination/transit country authorities.
• Advance Seat Reservation Term used for a process that allows a specific seat to be booked in advance of departure, e.g., when the reservation was originally booked.
• AEA (see “Association of European Airlines“)
• Agency An organization which acts on behalf of another.
• Agent Role of an individual person to be a staff of an agency.
• Aggregator An entity who distributes a Seller’s shopping request to multiple Airlines and aggregates subsequent responses.
• AHM (see “Airport Handling Manual“)
• AIDX (see “Aviation Information Data Exchange“)
• Air Operator’s Certificate The approval granted from the National Airworthiness Authority (NAA) to an aircraft operator to allow them to use their aircraft for commercial purposes (payment or reward).
• Aircraft A transport vehicle which is certified as airworthy by a competent aeronautical authority.
• Aircraft Bay A subdivision of a containerized/palletized compartment, i.e. ULD Load position
• Aircraft Configuration Planned utilization layout of aircraft interior space.
• Aircraft Group Group of aircraft operating together under the same ownership, belonging to the same aircraft type and having a set of configuration data in common.
• Aircraft Group Configuration Specific Configuration of an Aircraft Group.
• Aircraft Limitation Set Set of related limitations of an aircraft usually defined by the manufacturer in order to avoid overstressing the aircraft (structural load limitation) and to ensure proper balance conditions for safe flight (balance limitation).
• Aircraft Parking Position Gate or hard stand where an aircraft may park.
• Aircraft Payload The weight of passengers, baggage, cargo and mail and includes both revenue and non-revenue items.
• Aircraft Registration The complete alphanumeric identification assigned by the appropriate licensing authority to an individual aircraft. Hyphens contained within the registration shall not be included. E.g. GBOAC, N46573, ZZ123.
• AIRIMP The A4A/IATA Reservations Interline Message Procedures. It is the mandatory multilateral data exchange standard for interline communications for passenger reservations. A guide to teletype messages formats and rules that govern transmission circumstances for reservation type functions.
• Airline An enterprise operating aircrafts for commercial purposes which (i) performs scheduled or non-scheduled air transport services, or both, which are available to the public for carriage of passengers, mail and/or cargo and (ii) is certified for such purposes by the civil aviation authority of the state in which it is established.
• Airline Accounting Code It is used as the first three digits of a passenger traffic document, e.g., ticket. This identifies the document as being issued by or on behalf of an airline or non-airline company other than a CRS. This code is assigned by IATA.
• Airline Code (see “Airline Designator“)
• Airline Load Information Information distinguishing different categories of cargo used for load planning characterized by Airline specific codes in addition to codes defined in AHM510.
• Airline Prefix The first three digits of a cargo traffic document number, e.g., airway bill. This identifies the document as being issued by or on behalf of an airline. This code is assigned by IATA.
• Airline Tariff Publishing Company A commercial company dealing in the collection and distribution of fares and fare-related data for the airline and travel industry.
• Airlines Reporting Corporation A company which provides ticket transaction settlement services between airlines and travel agencies (both traditional and online) and the travel management companies that sell their products in the United States.
• Airport Handling Manual The source for the latest industry-approved policies and standards covering all facets of safe and efficient airport operations.
• Airports Council International The only global trade representative of the world’s airports.
• Airway Schedule Information about schedules for movements involving change in the position or location of aircrafts in the air.
• All-Cargo Aircraft A version of an aircraft type which carries cargo and mail only.
• Alliance Two or more airlines participating in a commercial relationship or joint venture, where a joint and commonly identifiable product is marketed under a single commercial name or brand.
• Alternative Reservation A definite reservation covering space on flight other than one originally preferred by passenger.
• Altitude The vertical distance of a level, a point, or an object considered as a point, measured from mean sea level (MSL).
• APEX Advance Purchase Excursion Fares
• Applicable Fare For fare construction purposes, a fare which is established after the application of all fare construction calculations, e.g. excess mileage fare, higher intermediate fare but excluding related charges e.g. amounts to be annotated with “S“ or “Q“
• ARC (see “Airlines Reporting Corporation“)
• Area The extent or measurement of a surface or piece of land, or a space allocated for a specific use. E.g. Check-in area, or security area at an airport.
• Area Load Limitation See floor load limitation.
• ARNK Arrival unknown or via means other than scheduled air service. Used in reservations to fill a gap in the itinerary.
• Assembly Point A point in the travel itinerary where an entire qualifying group of passengers assemble and commence transportation as a group.
• Asymmetrical Load Limitation Maximum load acceptable on each side of the compartment floor in relation with each other.
• Asymmetrical Load Limitation Table Set of related asymmetrical load limitations.
• Automated Ticket / Boarding Pass The form of automated ticket and boarding pass described in Resolutions 722c and 722d. It is a single copy non-carbonised ticket (normally on card stock) with each coupon imprinted separately. Each coupon used for air transport is comprised of a flight coupon and a detachable passenger coupon and boarding pass for a specific flight. One coupon is issued as the passenger receipt which together with all passenger coupons and boarding passes builds up the passenger copy of the passenger ticket and baggage check.
• Auxiliary Service Operator A term used to designate a vendor who provides desired services and/or accommodations needed by the passenger in conjunction with airline space, e.g., car and hotel.