EASA 2024-0028-E

Emergency AD requires repetitive inspection of the tail rotor blade assembly and, depending on findings, replacement. The AD stems from a report of increased vibration of the tail rotor on the affected model. Subsequent inspection identified a ruptured tail rotor blade assembly. Further investigation determined that the affected parts can be subject to intergranular corrosion, possibly leading to cracks. This condition, if not detected and corrected could lead to rupture of tail rotor blade assemblies, possibly resulting in reduced control of the helicopter.