AVS is the FAA organization responsible for the certification, production approval, and continued airworthiness of aircraft; and certification of pilots, mechanics, and others in safety - related positions. (transportation.gov)
Troubleshoot, repaired, cleaned, serviced, inspected, modified, replaced, and overhauled aircraft and aircraft systems using approved data to ensure airworthiness (jobhero.com)
A few hours later, the Federal Aviation Administration followed up with an emergency airworthiness directive (EAD) that requires certain older CFM56 - 7B engines to be inspected within the next 20 days. (businessinsider.com)