Summary
We propose to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A320-214 and -271N airplanes and Model A321- 211 and -231 airplanes. This proposed AD was prompted by a test of a new wall partition for a certain cabin attendant seat model that revealed the backrest was permanently deformed and did not allow the seat pan to return to a full-up position; investigation results identified that a heat treatment had not been applied on certain backframes. This proposed AD would require modifying the affected cabin attendant seats, as specified in an European Aviation Safety Agency (EASA) AD, which will be incorporated by reference. We are proposing this AD to address the unsafe condition on these products.