Yes, there was a minor derailment last week on 186 at Missanabie. From what we heard, ice pack in a grade crossing caused one axle of the RDC-4 (6250) to ride up off the track. Cars stayed upright, but because that truck went on the ground they’re required to replace both axles before it can carry passengers again. So 6250 is out of service for at least a little while.
That train eventually deadheaded back to Sudbury, and the Saturday/Sunday trip was cancelled.
Forunately for us, on Monday they were able to get 6219 (which hadn’t been in service since some time last year) tuned up, spun on the turntable, and paired with 6217. So we had two RDC-2s for our trip out and back, instead of the usual RDC-2+RDC-4.