The Federal Aviation Administration (FAA) announced on Monday mandatory inspections for 2,600 Boeing 737 airplanes due to concerns over potential failures of passenger oxygen masks in emergency situations. This directive covers both 737 MAX and NG models following instances where oxygen generators in passenger service units were found to be dislodged, posing risks of inadequate oxygen supply during a loss of cabin pressure.

Inspections will involve comprehensive visual checks, with affected oxygen generators replaced as needed with new or serviceable units. Thermal pads will also be secured and generators repositioned to ensure compliance with safety standards.

Boeing issued a bulletin on June 17 advising airlines to conduct visual inspections, prompting the FAA’s airworthiness directive to take immediate effect. Airlines must complete inspections and necessary corrective actions within 120 to 150 days, contingent on the specific 737 model. Furthermore, the FAA prohibits the installation of potentially faulty components.

Boeing has not yet responded to requests for comment on the FAA’s directive.