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A passenger name record (PNR) is a record in the database of a computer reservation system (CRS) that contains the itinerary for a passenger or a group of passengers travelling together. The concept of a PNR was first introduced by airlines that needed to exchange reservation information in case passengers required flights of multiple airlines ...
When a reservation is made, a passenger name record (PNR) is created in the computer reservation system (CRS) used by the person making the booking, and the CRS will automatically generate a record locator for the PNR. If the only flight(s) are operated by the airline on which the booking is being made, then only one PNR will exist.
Flight tracking enables travellers as well as those picking up travellers after a flight to know whether a flight has landed or is on schedule, for example to determine whether it is time to go to the airport. Aircraft carry ADS-B transponders, which transmit information such as the aircraft ID, GPS position, and altitude as radio signals.
Before a flight departs, the so-called passenger name list (PNL) is handed over to the departure control system that is used to check-in passengers and baggage. Reservation data such as the number of booked passengers and special service requests is also transferred to flight operations systems, crew management and catering systems.
DCS are able to identify, capture and update reservations from an airline's computer reservation system for passengers stored in a so-called passenger name record (PNR). A DCS is used to update reservations, typically as checked-in, boarded, flown or another status.
Advance Passenger Information System [1] or APIS is an electronic data interchange system established by the U.S. Customs and Border Protection (CBP). [2]APIS governs the provision of a limited number of data elements (identification details from the passport and basic flight information) from commercial airline and vessel operators to the computer system of the destination state. [3]