15,000 American Airlines flights in December have no pilots, union says

A glitch in American Airlines' system that gives pilots time off based on their seniority has resulted in over 15,000 unmanned cockpits for flights scheduled from Dec. 17–31, per Reuters.

Why it matters: That's one of the busiest times for air travel. American Airlines spokesperson Matt Miller told Reuters, "We are working through this to make sure we take care of our pilots and get our customers where they need to go over the holiday."