21 November, EASA issued AD No. 2018-0252-E, which now supersedes AD 2018-0250-E (of 19 November). AW169 & 189 (similar TR flight control systems).
"The incorrect installation of the TR servo-actuator, if not detected and corrected, depending on the flight condition, could possibly result in loss of control of the helicopter." Since the initial ASB from Leonardo, there has been further instruction to look at the duplex bearing.
Still an interim measure, but alters the inspection of the duplex bearing and servo-actuator within 5 flight hrs or 24 hrs.
1. Inspect TR duplex bearing in accordance with the accomplishment instructions - Part I of the ASB
2. Accomplish a breakaway torque check of the TR Duplex bearing in accordance with the accomplishment instructions - Part II of the ASB
3. Accomplish an inspection and reinstallation of the TR servo actuator castellated nut in accordance with the accomplishment instructions - Part III of the ASB
(CAA circulated 22 November, which I read this morning).