For the last two days, there are a great many DALxxxx flights showing as en route and/or scheduled for departure with no aircraft type. For example, here at KBIL, Delta does not even fly here anymore, it is handled by Skywest, and currently there are nearly a dozen pending DAL flights. Clearly these are not actual flights, but some software glitch.
trw
This has been mentioned in a few other threads… it looks like Delta filed flight schedules (which the scheduled airlines do monthly as far as I know) that included some of the routes operated by their regional partners. So we get a scheduled flight message 24 hours in advance (with no aircraft type), but then the real flight comes in under the regional partners code and we eventually drop the mainline flight from the displays.