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Glossary for the airline industry

From A-Z, this glossary covers definitions and explanations for common airline industry terminology.


User-defined group.

unavailable tag

A tag attached to Record 1 stating that the rules are incomplete or cannot be used for autopricing.


1. The status assigned by the system to provisions that have been updated but have not yet been processed through GFS and subsequently sent in Subscriptions. See also filed data.

2. See non-filed.

universal mileage currency

Currency code XXX used to file mileage awards


Unaccompanied child (usually age 5-11 or 8-11).

unpublished fare

ATPCO term for fares constructed by adding specified and add-on amounts together. Also called constructed.


Universal Product Attribute. One type of Routehappy Content, UPAs describe fares, products, and services with visual messaging, images, videos, and cabin tours. See also UTA and Amenities.

update errors

Records in batch processing that do not pass update. The update step applies the fares to the master file. If there are difficulties, then the fare will not be applied to the master file. Instead, it becomes an update error record. Update errors occur, for example, when a carrier tries to increase a fare that does not exist, cancel a fare that is already canceled, or add a new fare that already exists.


The United States and Canada.

US/CA domestic fare

Fares that are published for travel within the continental United States, between the continental United States and Alaska/Hawaii, within Alaska/Hawaii, between the 50 United States and Canada/Puerto Rico/Virgin Islands, within Canada/Puerto Rico/Virgin Islands, or between Canada and Puerto Rico/Virgin Islands. Also called local fares.

user ID

The seven-character user name for access to ATPCO systems.

user-defined group

A group of conditions, similar to inclusive tables, created in order to speed processing for frequently used fields (location, routing, rule, footnote, and market) in a query.

user-defined zone

Any grouping of locales using cities, states, countries, industry zones, or areas defined by a data owner and assigned a unique Table 978 number. This zone ID can then be used as a single location when creating fares in Category 25.


Universal Ticket Attribute. One type of Routehappy Content, UTAs describe benefits and restrictions by fare in plain, simple language. UTAs are sourced from airline ATPCO fare, branded fare, and optional service filings. See also UPA and Amenities.