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United States Department of Transportation

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Database Name: Airline Origin and Destination Survey (DB1B)
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Table Name	Description
Note: 1- Over time both the code and the name of a carrier may change and the same code or name may be assumed by a different airline. To ensure that you are analyzing data from the same airline, TranStats provides four airline-specific variables that identify one and only one carrier or its entity: Airline ID (AirlineID), Unique Carrier Code (UniqueCarrier), Unique Carrier Name (UniqueCarrierName), and Unique Entity (UniqCarrierEntity). A unique airline (carrier) is defined as one holding and reporting under the same DOT certificate regardless of its Code, Name, or holding company/corporation. 2- Local traffic carried by ExpressJet Airlines is under represented from the 2nd quarter 2007 to the present.

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