EASA 2019-0272R1

Revises Emergency AD  2019-0272-E calling for repetitive inspections of the tail rotor (TR) hub body and corrective actions as necessary and replacement of associated attachment bolts, washers, and nuts. That AD stemmed from a report that during an inspection of a TR hub body, a recurrent case of loss of tightening torque on several attachment bolts was found. This condition can lead to crack and loss of the TR drive, possibly resulting in the loss of yaw control of the helicopter. Since that AD was issued, it was determined that crack propagation is linked to flight hours and not to calendar time. Consequently, this revised AD is issued to remove the calendar-days interval and instead calls for a flight-hour interval.