For the first time in a few years, I was unable to catch the tail number of one of my flights (I swear, Delta intentionally makes it hard to see CRJ registrations, as they are frequently behind the engine), and I'd prefer not to wait for three months until the BTS data comes out. So, could someone help me out? Delta Flight 4600, operated by Skywest, SLC-SFO, today, September 27. The help is much appreciated. Thank you!