Airworthiness Directives; Airbus Airplanes

We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318 series; Model A319 series; Model A320 series; and Model A321-111, -112, -131, -211, -212, -213, -231, and -232 airplanes. This proposed AD was prompted by reports of multiple angle of attack (AoA) probe blockages. This proposed AD would require all elevator aileron computer (ELAC) units to be upgraded with new software, or replaced with upgraded units. We are proposing this AD to address the unsafe condition on these products.