Airworthiness Directive · Amendment 39-22761 · Powerplant
Gulfstream Aerospace Corporation Airplanes
This AD applies to Gulfstream Aerospace Corporation airplanes, certificated in any category, identified in paragraphs (c)(1) and (2) of this AD.
(1) Model GVII-G500 airplanes, serial numbers (S/Ns) 72001 through 72140 inclusive.
(2) Model GVII-G600 airplanes, S/Ns 73001 through 73148 inclusive.
The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation Model GVII-G500 and GVII-G600 airplanes. This AD was prompted by a report of a failed rear engine mount discovered during a preflight walk-around due to visible engine misalignment. This AD requires inspecting the left and right engine mount points within the pylons and engine nacelles for non-conforming hardware installation, repairing the engine mount points if necessary, and revising the existing aircraft maintenance manual (AMM) to include revised procedures for engine removal and installation. The FAA is issuing this AD to address the unsafe condition on these products.
Within 30 days after the effective date of this AD, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of the applicable material specified in paragraphs (g)(1) and (2) of this AD.
(1) Gulfstream GVII-G500 Customer Bulletin No. 092, Revision A, dated April 9, 2024.
(2) Gulfstream GVII-G600 Customer Bulletin No. 063, Revision A, dated April 9, 2024.
Within 30 days after the effective date of this AD, revise the existing AMM to incorporate the procedures specified in paragraphs (h)(1)(i) through (vi) or (h)(2)(i) through (vi) of this AD, as applicable.
(1) Chapter 71—Powerplant, Gulfstream Aerospace GVII-G500 AMM, Document Number GAC-AC-GVII-G500-AMM-0001, Revision 18, dated March 29, 2024:
(i) 71-20-02 Engine Mount Hardware—Removal/Installation, 71-20 Mounts;
(ii) 71-21-03 Engine Forward Link Assemblies—Removal/Installation, 71-21 Front Mounts;
(iii) 71-21-04 Forward Engine Mount Assembly—Removal/Installation, 71-21 Front Mounts;
(iv) 71-22-03 Aft Engine Mount Strut Assembly—Removal/Installation, 71-22 Rear Mounts;
(v) 71-23-05 Engine Thrust Strut—Removal/Installation, 71-23 Mounts: Support Links and Accessories; and
(vi) 71-23-06 Engine Alignment Strut—Removal/Installation, 71-23 Mounts: Support Links and Accessories.
(2) Chapter 71—Powerplant, Gulfstream Aerospace GVII-G600 AMM, Document Number GAC-AC-GVII-G600-AMM-0001, Revision 14, dated March 29, 2024:
(i) 71-20-02 Engine Mount Hardware—Removal/Installation, 71-20 Mounts;
(ii) 71-21-03 Engine Forward Link Assemblies—Removal/Installation, 71-21 Front Mounts;
(iii) 71-21-04 Forward Engine Mount Assembly—Removal/Installation, 71-21 Front Mounts;
(iv) 71-22-03 Aft Engine Mount Strut Assembly—Removal/Installation, 71-22 Rear Mounts;
(v) 71-23-05 Engine Thrust Strut—Removal/Installation, 71-23 Mounts: Support Links and Accessories; and
(vi) 71-23-06 Engine Alignment Strut—Removal/Installation, 71-23 Mounts: Support Links and Accessories.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
