Entreprise · 27/10/19941 min de lecture
Airworthiness Directives; Costruzioni Aeronautiche Giovanni Agusta S.p.A. Model A109A and A109AII Series Helicopters
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Résumé
This amendment supersedes an existing airworthiness directive (AD), applicable to Costruzioni Aeronautiche Giovanni Agusta S.p.A. Model A109A and A109AII series helicopters, that currently imposes a calendar life limit of 10 years and 6 months on the main rotor retention strap assemblies (strap assemblies). This amendment requires reducing the calendar life limit to 8 years. This amendment is prompted by additional service experience and analyses, that show the current life limit needs to be reduced from 10 years and 6 months to 8 years to prevent deterioration and subsequent failure of the strap assemblies. The actions specified by this AD are intended to prevent failure of the strap assemblies, loss of a main rotor blade, and subsequent loss of control of the helicopter.