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URL2: https://www.slideshare.net/ForeignObjectDamage/how-to-prevent-fod-in-aviation-foreign-object-damage-also-known-as-fod-is-a-major-problem-in-the-aviation-industry-fod-can-cause-expensive-damage-to-aircraft-and-it-can-also-pose-a-safety-hazard-to-passengers-anpdf
