Okay, just doing some more digging on the 10-September AC incident that resulted in a diversion to FAI.
Flightaware says that AC7058 , a 762, arrived from YVR.
AC 2065, a 762, left for YVR later.
There's no record of any aircraft departing for Seoul from Fairbanks this week. And the only AC operations that show up in Flightaware are 762-based.
So
something is wrong with that news article.
As a meeting planner who uses AC, I've pleaded to no avail for over a decade for extra flights for my groups (even over 18 months out and with the cash to boot). Amazing at huge loss of cash to shareholders, they pull another 77 out of the shed and away we go. Agree was the right tihng to do and it's one of the reasons I use AC, but in the last 3 years alone I've given over 1000 revenue seats to American carriers!
Well... I've seen on numerous occasions, AC swapping a 321 for a scheduled 319, when there was a significant tour group aboard.
But doing that isn't too difficult. Adding extra flights, or changing the crew levels in a significant way takes a lot more planning..