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Though the FAA does not always keep this list up to date (ie: you’ll find carrier codes in the data that are not on this list – FAA SDR management is aware of the issue)
Sample (columns 1-4 = CARRIER_CD, columns 5-55 = OWNER/OPERATOR/CARRIER NAME
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If we encounter a CARRIER code we dont have, we can possibly grab it from this list, and add it into CAWIS - manually updating the CARRIER code table
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