FAA EAD 2023–20–51

Requires accomplishing a one-time inspection to measure the internal diameter of affected bushing retaining plates and depending on the results, inspecting the scissor attachment ball joint seating or replacing non-conforming bushing retaining plates. Depending on the results of the scissor attachment ball joint seating inspection, the emergency AD requires accomplishing repair. The AD stems from a report that during an overhaul of a main rotor assembly, three newly supplied main rotor swashplate retaining bushes were identified as out of tolerance