American Airlines has canceled approximately 570 flights on Friday, April 11, as it works to complete the inspections of its MD-80 fleet. The airline continues efforts to re-accommodate customers affected by this week’s activity.

As of Thursday afternoon, 132 MD-80 aircraft were returned to service. Inspections continued overnight, with approximately 170 MD-80s expected to be available for service on Friday morning.

These inspections were conducted to ensure compliance with a Federal Aviation Administration directive related to the bundling of wires in the wheel well of the MD-80 aircraft.

On Thursday American Airlines canceled over 930 flights related to the MD-80 inspections. That follows the cancellation of 1,094 flights on Wednesday and 460 canceled flights on Tuesday.