AFR9587

I had a friend of mine that works at a local news station ask me about this flight (AFR9587) that has been filed almost everyday from KDTW to KTUL, but has never even left Detroit. I figured it was a repositioning flight, charter, or maintenance flight, but the never leaving Detroit has me stumped. It is always scheduled to leave between 6-7PM (Central). Any ideas? My other thought was some error or possible codeshare with Delta/Northwest since there is a flight from DTW-TUL that leaves about the same time it is scheduled.

flightaware.com/live/flight/AFR9587

It’s a codeshare with Delta. Pinnacle actually operates the flight from DTW to TUL.

That was one of the things I was thinking, but wasn’t 100% sure.