The Federal Aviation Administration (FAA) issued a new airworthiness directive (AD) requiring certain models of turbofan engines made by International Aero Engines AG to have specific high-pressure turbine (HPT) disks removed from service. This action was prompted by a failure that resulted in high-energy debris escaping an engine, which posed a risk to aircraft safety. The directive is effective January 21, 2021, and it requires removal of the affected parts within 50 flight cycles or 30 days. The FAA determined this rapid action was necessary to prevent potential engine damage or airplane loss.
Simple Explanation
The FAA has a new safety rule for certain airplane engines to remove some parts quickly because they can break and cause dangerous flying pieces. This rule helps keep the planes safe by stopping any possible damage from these broken parts.