Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

We are adopting a new airworthiness directive (AD) for all Gulfstream Aerospace Corporation Model G-1159, G-1159A, G-1159B, and G- IV airplanes. This AD requires revision of the maintenance or inspection program to establish the life limit of all elevator assemblies and skins on affected airplanes. This AD was prompted by the need to establish life limits for certain elevator assemblies and skins. We are issuing this AD to prevent failure of the elevator assembly and consequent loss of control of the airplane.