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The U.S. Air Force discovered a fan blade defect in Pratt & Whitney’s F100-PW-229 fighter-jet engine while investigating a mishap, according to service officials.“Once they tore into the root cause [of the mishap], they noticed that there was a defect with the actual blades in the engine,” said Maj. Gen. John Rauch, commander of the Air Force Safety Center at Kirtland Air Force Base in New Mexico. “So [they] went back, discovered that it was a manufacturing process and then…
