84-19-05: Engine Mount Systems

84-19-05 GULFSTREAM AEROSPACE CORPORATION: Amendment 39-4925. Applies to Models 690 and 690A, (S/Ns 11001 through 11284 which have had engine isolator assemblies replaced after July 28, 1975); 690A (S/Ns 11285 through 11344); 690B (S/Ns 11350 through 11566); 690C (S/Ns 11600 through 11732); 690D (S/Ns 15001 through 15033 and 15037); 695 (S/Ns 95000 through 95084); 695A (S/Ns 96001 through 96061, 96063 through 96072, 96075, 96078, 96085, and 96088) airplanes certificated in any category. Compliance: Required as indicated, unless already accomplished. To prevent failure of the engine mount systems accomplish the following: (a) Within 50 hours time-in-service after the effective date of this AD, inspect and modify, if required, the engine mount systems in accordance with Gulfstream Aerospace Corporation Service Bulletin SB201 issued May 11, 1984. (b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (c) An equivalentmethod of compliance with this AD may be used if approved by the Manager, Airplane Certification Branch, ASW-150, FAA, Southwest Region, Post Office Box 1689, Fort Worth, Texas 76101; telephone (817) 877-2070. This amendment becomes effective on October 8, 1984.