Was this a marketing change - where AC sold tickets for mainline, then subbed in Rouge because "screw the customers, they don't know the difference"? Or was this an aircraft swap?
I'm not heckling here, I'm actually asking; AC177 has been scheduled for a 220 or a 321 for the last week, but
FR24 suggests it's scheduled for fin 252 again tonight, then back and forth between 319s and 321s all week.