AutoFill requires an airline code to retrieve data from our cloud resources. The airline code of your current employer is automatically used in the background for AutoFill. As a result, deadhead flights will not be able to AutoFill unless they are on your own airline. If you are deadheading on a different airline, you can enter the airline code prefix to the flight number in order to enable autofill for off-line deadhead flights. For example, if deadheading on a Delta flight and you don't work for Delta, enter "DAL1234" as the flight number instead of just "1234".