EASA 2019-0024

The AD implements limits for storage life of certain TT-Straps and provides conditions for installation of parts. This AD also requires replacement of certain Lord and Bendix TT-Straps with serviceable parts.  The AD also prohibits installation of a certain Bendix TT-Strap. This AD is prompted by the determination that aging of the elastomeric material, since manufacturing up to its first flight, may affect the structural characteristics of TT-Strap. This condition could lead to premature failure of a TT-Strap and possible resulting in loss of control of the helicopter.