Summary
This action withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD), applicable to certain Airbus Model A320-211, -212, -214, -232, and -233 series airplanes and Model A321-211, -231, and -232 series airplanes. That action would have required a one-time ultrasonic inspection of certain floor crossbeams to determine if they are of nominal thickness; and a structural modification to reinforce any crossbeam that is not of nominal thickness. Since the issuance of the NPRM, the Federal Aviation Administration (FAA) has received new data showing that all airplanes subject to the NPRM have already been inspected and all incorrect crossbeams modified as required, which makes the NPRM unnecessary. Accordingly, the proposed rule is withdrawn.