The FAA proposes to adopt a new airworthiness directive AD for all Airbus SAS Model A321-251NX -252NX -253NX -271NX and -272NX airplanes. This proposed AD was prompted by the discovery during a quality review performed during manufacturing that a torque strip indicator material Dykem had been applied on the orifice fitting on certain slides' inflation reservoirs' venting holes. This proposed AD would require an inspection for discrepancies of affected parts certain reservoirs having certain orifices and replacement of discrepant affected parts and would prohibit installing affected parts as specified in a European Union Aviation Safety Agency EASA AD which is proposed for incorporation by reference IBR. The FAA is proposing this AD to address the unsafe condition on these products.