Some operators of Engine Alliance GP7000-series powered Airbus A380s face more stringent engine fan hub assembly inspections after examination of the hub that separated during an uncontained failure two years ago pointed to higher risk of cracks. FAA on Sept. 24 issued a new airworthiness directive (AD) that lowers initial-inspection thresholds for the entire first-stage low-pressure compressor rotor, or fan hub, assembly and adds repetitive inspections for fan hub blade slot bottoms and ...

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