When does Tail Number data become available?

Hello,

Could anyone comment on when Tail Number data generally becomes available in the response of an AirlineFlightInfo request? 72-hours before Departure? 24-hours before Arrival? Having a general idea of when I should expect the data to be available will help me determine when I should start polling for it with AirlineFlightInfo.

Thanks

Probably just a couple of hours before the flight’s departure, and keep in mind that it can continue to change right until departure. And remember that not all airlines communicate the tail number to us at all.