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Wed, Aug 31, 2011

AD: Agusta Model 109 Helicopters

AD NUMBER: 2011-17-01

MANUFACTURER: Agusta S.p.A. Model A109A, A109A II, A109C, and A109K2 Helicopters
SUBJECT: Airworthiness Directive 2011-17-01
ACTION: Final rule; request for comments

SUMMARY: This amendment supersedes an existing emergency airworthiness directive (EAD) for the specified Agusta S.p.A. (Agusta) model helicopters. That EAD currently requires inspecting the main rotor scissor fitting assembly to determine if there are 2 washers installed under the head of each main rotor scissor fitting assembly fixing bolt (fixing bolt). If there are not 2 washers installed under the head of each fixing bolt, that EAD requires replacing each fixing bolt and installing 2 washers under the head of each fixing bolt. This superseding airworthiness directive (AD) is prompted by the determination that a wrong part number (P/N) for the main rotor scissor fitting assembly was listed in the EAD. This AD retains the requirements of the EAD and corrects a P/N for the main rotor scissor fitting assembly. The actions specified by this AD are intended to prevent a crack in a fixing bolt, failure of a fixing bolt, and subsequent loss of control of the helicopter.

DATES: Effective September 12, 2011

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/28F138CE29B4D9D0862578F8004E1F4C?OpenDocument

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