2018-SW-081-AD: Leonardo S.p.a. Model AB139 and AW139 helicopters, to Require Repetitively Inspecting the Main Rotor Rotating Scissors, Removing Certain Lower Half Scissor Spherical Bearings From Service, and Installing a Special Nut and a New Part-Nubmered Bearing.
🏛 Federal Aviation Administration (FAA)FAA-2020-0797
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