If you want to consider Office Car Specials as "passenger trains", there are two of note.
On November 1, 1981, MEC ran their OCS on the Mountain Division. It never made it to
St. Johnsbury, as it hit a washout in Miles Pond Vt and derailed. The two locomotives,
including the #573 were badly damaged. I cannot seem to find a text account of the
mishap, but click on this URL, scroll down to photos six through nine and enlarge.
Luckily the #573 was rebuilt and later purchased by the CSRX.
http://www.rrpicturearchives.net/modelt ... MEC&Page=8
In 1983, I believe GRS used the OCS to deliver the 501 to North Conway. Perhaps
other posters can provide photo and text material URLs for this move.