AC269 YYZ-YWG was delayed today post-boarding for ~1.5hrs. Captain came on and said that it was due for a maintenance check earlier today, but it never happened and as a result they needed the paperwork done. He also said that he/FO had done their walk around and there was no maintenance issue with the aircraft, just that it's paperwork that needs to get done.
Expertflyer has it coded as delay non-scheduled maintenance, which is funny since the Captain said it was scheduled maintenance that just missed its schedule...
The in-seat outlet also doesn't work (pretty reliably doesn't work on the A321s) so I'm really down to the last of my battery now!