Airworthiness Directives; Gulfstream Aerospace Corporation Model G-159 (G-I) Airplanes

This amendment supersedes an existing airworthiness directive (AD), applicable to certain Gulfstream Model G-159 (G-I) airplanes, that currently requires repetitive inspections to detect cracks and loose rivets in the forward brackets for the main landing gear (MLG) uplock beam assembly, and replacement of the brackets, if necessary. This amendment requires installation of redesigned brackets that preclude the potential for cracking and loose rivets, when accomplished, this installation constitutes terminating action for the currently required inspections. This amendment is prompted by the development of an installation that will positively address the identified unsafe condition. The actions specified by this AD are intended to prevent failure of the bracket for the MLG uplock beam assembly due to cracking and loose rivets; such failure could result in the inability to retract the MLG.