I don't think it's limited by aircraft. My flight #740 on Wed. 27Jun was already cancelled as of Sunday (Sat?) and it's a A319. I got rebooked on #744. Of course everyone I work with has to swizzle around their schedules to accomodate this. I finally got the email today just now, with NWA apologizing for the inconvenience. How kind of them. The reason? "no flight crew available"
Can I get them to also apologize to MY customers?