EASA 2019-0087-E (Emergency)

Requires a one-time inspection of each single-axis actuator of the main rotor actuator to detect corrosion, reporting of inspection results to AHD and, depending on findings, replacement of affected parts. AD also provides criteria to allow installation of an affected part. Prompted by a reported of a hard landing of an EC135 and subsequent inspection identifying that the tie bar inside the piston of the longitudinal single-axis actuator of the main rotor actuator was ruptured and displaced.