Originally Posted by
D582
On one of my upcoming YVR-YYZ flights, it was a 763 when booked, then changed to 321, and then changed to 320. At no point did my assigned seat number change, so I don't know if it is true to say that seats are randomly reassigned in the case of equipment changes.
The whole point of AC's seat numbering protocol was to simplify seating during equipment changes, so if you have a seat that exists in most aircraft types (eg 24A), you should be OK. But the widebody/narrow body changes can cause real headaches, not only because there are more seats in a row, but particularly when the first row in Y is 18 on a 777 or 330, but 12 in a 767 or Airbus.
IMO, AC does not handle these well, particularly if going from a 777/330 (say, in 18A) to a 767, when that seat is already allocated - they just find a seat in any old place, irrespective of your status or obvious desire for a preferred seat.