Special Conditions: Airbus SAS A320-200 Series Model A320-251N, -252N, -253N, -271N, -272N, -273N Airplanes and A321-200 Series Model A321-251NX, -252NX, -253NX, -271NX, -272NX Airplanes; Flight Attendant Seat Mounted on Movable Interior Structure

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These special conditions are issued for the Airbus SAS (Airbus) A320-200 Series Model -251N, -252N, -253N, -271N, -272N, -273N (known as A320neo) airplanes and A321-200 Series Model -251NX, -252NX, -253NX, -271NX, -272NX (known as A321neo) airplanes. The airplanes have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. This design feature is flight attendant seats mounted on movable lavatory doors. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.