The FAA has issued a new airworthiness directive for all Airbus SAS Model A321-251NX, -252NX, -253NX, -271NX, and -272NX airplanes. This directive requires inspecting certain parts of these airplanes for discrepancies and replacing any faulty components. It was introduced after finding that a material called "Dykem" had clogged specific venting holes, which could cause problems during flight. This rule, effective January 13, 2025, aims to ensure these airplanes remain safe to operate.
Simple Explanation
Airplanes have cool, inflatable slides for emergencies, and some of these slides have little holes that got clogged with a special paint called "Dykem." The FAA wants people to check and fix this so the slides work perfectly, just like how someone might check a toy to make sure it's safe to play with.