Airworthiness Directives; Agusta S.p.A. Model A109A and A109A II Helicopters

This amendment supersedes an existing airworthiness directive (AD), applicable to Agusta Model A109A and A109A II helicopters, that currently requires, before further flight, inspecting any tail rotor blade (blade) with 400 or more hours time-in-service (TIS) for a crack and replacing any cracked blade before further flight. This amendment contains the same requirements as the current AD but corrects the paragraph that requires ``replacing any cracked blade with an unairworthy blade.'' This amendment is prompted by the need to correct the requirement to mandate ``replacing any cracked blade with an airworthy blade.'' The actions specified by this AD are intended to prevent fatigue failure of the blade, loss of the tail rotor, and subsequent loss of control of the helicopter.