American Airlines says if pilots don't end disruptive activities to flight schedules, it will take the pilots union to court.

American says increased sick days and maintenance complaints by their pilots have caused an increase in canceled and delayed flights in September for the reeling airline trying to emerge from bankruptcy.

The Fort Worth based airline believes the sick days and so called maintenance issues are the pilots protesting against the company's decision, while under bankruptcy protection, to cancel the union's contract and set pay and work rules for pilots.

The Allied Pilots Association, who represents the pilots of American, denies there is an organized effort to have a "sickout" among crews and blames the problems on a shortage of pilots and old planes that have frequent maintenance needs.