I have an odd question for anyone who has access to old flight information:

Can anyone tell me which aircraft was used on Delta flight 275 from DTW to NRT on September 3, 2017 and on Delta flight 276 from NRT to DTW flight on September 12 2017?

Both were 747-400 but I did not get the tail numbers.

I'm guessing this info is out there somewhere - but I can't locate it.

Thanks in advance for any help.