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Notice of proposed rulemaking (NPRM).

We propose to adopt a new airworthiness directive (AD) for certain International Aero Engines AG (IAE) V2500 model turbofan engines. This proposed AD was prompted by an inspection that determined that material anomalies exist in certain low-pressure turbine (LPT) stage 6 disks. This proposed AD would require removal from service of the affected LPT stage 6 disks and their replacement with a part eligible for installation. We are proposing this AD to address the unsafe condition on these products.

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