Came in as DAL1467, I think it was N827MH. This flight is an Atlanta-SAN daily, although it is usually operated by a 757-300. Judging by the 1 hour delay today, there was a mechanical issue with the B753 and the closest plane available was the B764 that they used today. I got some stills on video I might post later.
Also, I believe this is the first 767-400 to come to SAN this year, and there might be up to 3 more from United as NFL charters.
If anyone got some photos, please share!
EDIT: It is scheduled to takeoff as DAL1642 SAN-ATL tomorrow at around 0900.