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Thu, Jan 14, 2016

AD: Agusta S.p.A. Helicopters

AD NUMBER: 2016-01-06

PRODUCT: Agusta S.p.A. (Agusta) Model AB139 and AW139 helicopters.

ACTION: Final Rule; request for comments

SUMMARY: This AD requires inspecting each full ice protection system tail rotor slip ring (slip ring) for chatter marks, witness marks, or scoring, and determining the depth of each mounting hole.

Based on the findings from the inspection, this AD requires either re-identifying the slip ring or replacing the slip ring. This AD is prompted by two incidents of the slip ring body separating from the supporting flange due to improper torque.

These actions are intended to prevent separation of the mounting flange from the slip ring body and subsequent loss of control of the helicopter.

DATES: This AD becomes effective January 28, 2016. Comments must be received by March 14, 2016.

FMI: AD

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