The relevant Eurocopter Alert Telex equires a visual inspection at the next, and each, ALF check (after last flight of day) until they introduce a modification to prevent any interference with the trim actuator rod in the event of failure of the vibration damper blade.
No mention of engineers needing to do it. Extension of Check A, so effectively daily.
Anyone ever come across such a damper blade crack/failure or know the TT/history of the incident that triggered this?