Airworthiness Directive · Amendment 39-22695 · Fuel boost pump
Gulfstream Aerospace Corporation Airplanes
This AD applies to the 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 and subsequent.
(2) Model GVII-G600 airplanes, S/Ns 73001 and subsequent.
The FAA is superseding Airworthiness Directive (AD) 2020-23- 04, which applied to certain Gulfstream Aerospace Corporation Model GVII-G500 and GVII-G600 airplanes. AD 2020-23-04 required revising the existing airplane flight manual (AFM) and airplane maintenance manual (AMM) to include information pertaining to the fuel boost pump. This AD was prompted by a report of misassembled impellers on the shaft of the fuel boost pump during production. This AD retains the requirements of AD 2020-23-04 and requires inspecting affected fuel boost pumps for proper installation of the impeller shaft key, marking affected fuel boost pumps that pass that inspection, and replacing fuel boost pumps that fail. This AD also limits the installation of affected fuel boost pumps. The FAA is issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (g) of AD 2020-23-04, with updated service information. For Model GVII-G500 airplane S/Ns 72001 and 72007 through 72062 inclusive; and Model GVII-G600 airplane S/Ns 73002, 73004, 73006 through 73040 inclusive, 73042, and 73043: Within 14 days after November 24, 2020 (the effective date of AD 2020-23-04), do the actions in paragraphs (g)(1) through (3) of this AD, as applicable.
(1) Revise your existing airplane maintenance manual (AMM) by replacing the procedures listed in paragraphs (g)(1)(i) through (vi) of this AD, as applicable for your model airplane.
(i) GVII-G500 Maintenance Manual 12-13-01 Defueling Procedure-Defuel, dated August 31, 2020; or 12-13-01 Defueling Procedure-Defuel, 12-13 Fueling and Defueling Operations Replenishing, Chapter 12—Servicing, Gulfstream Aerospace GVII-G500 Aircraft Maintenance Manual, Document Number GAC-AC-GVII-G500-AMM-0001, Revision 16, dated November 30, 2023.
(ii) GVII-G500 Maintenance Manual 28-26-04 Fuel Boost Pump-Prime, dated August 31, 2020; or 28-26-04 Fuel Boost Pump-Prime, 28-26 Engine and APU Fuel Delivery, Chapter 28—Fuel, Gulfstream Aerospace GVII-G500 Aircraft Maintenance Manual, Document Number GAC-AC-GVII-G500-AMM-0001, Revision 16, dated November 30, 2023.
(iii) GVII-G600 Maintenance Manual 12-13-01 Defueling Procedure-Defuel, dated August 31, 2020; or 12-13-01 Defueling Procedure-Defuel, 12-13 Fueling and Defueling Operations Replenishing, Chapter 12—Servicing, Gulfstream Aerospace GVII-G600 Aircraft Maintenance Manual, Document Number GAC-AC-GVII-G600-AMM-0001, Revision 12, dated November 30, 2023.
(iv) GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-Prime, dated August 31, 2020.
(v) GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-Removal/Installation, dated August 31, 2020; or 28-26-04 Fuel Boost Pump-Removal/Installation, 28-26 Engine and APU Fuel Delivery, Chapter 28—Fuel, Gulfstream Aerospace GVII-G600 Aircraft Maintenance Manual, Document Number GAC-AC-GVII-G600-AMM-0001, Revision 12, dated November 30, 2023.
(vi) GVII-G600 Maintenance Manual 28-26-05 Fuel Boost Pump Canister-Removal/Installation, dated August 31, 2020.
(2) Revise your existing airplane flight manual (AFM) by including in the AFM the airplane flight manual supplement (AFMS) listed in paragraph (g)(2)(i), (ii), or (iii) of this AD that is applicable to your model airplane. Using a later AFM revision with information identical to that contained in the AFMS specified for your airplane is acceptable for compliance with the requirement of this paragraph.
(i) Gulfstream Aerospace GVII-G500 Airplane Flight Manual Supplement No. GVII-G500 (Issue 1)—2020-05, dated September 8, 2020; or
(ii) Gulfstream Aerospace GVII-G500 Airplane Flight Manual Supplement No. GVII-G500-2020-06, dated September 8, 2020; or
(iii) Gulfstream Aerospace GVII-G600 Airplane Flight Manual Supplement No. GVII-G600-2020-06, dated September 8, 2020.
(3) The action required by paragraph (g)(2) of this AD may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9(a)(1) through (4), and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439.
For Model GVII-G500 airplane S/Ns 72001 and 72007 through 72062 inclusive; and Model GVII-G600 airplane S/Ns 73002, 73004, 73006 through 73040 inclusive, 73042, and 73043: Except as specified in paragraph (i) of this AD, within 24 months after the effective date of this AD, do all actions specified in paragraph III.D. and all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Gulfstream GVII-G500 Customer Bulletin No. 069 or Gulfstream GVII-G600 Customer Bulletin No. 037, both Revision A, both dated February 2, 2023, as applicable.
Note 1 to paragraph (h): The serial number on the aft exterior of the pump is not the pump serial number.
Note 2 to paragraph (h): Guidance on pump removal and installation procedures can be found in Gulfstream Aerospace GVII-G500 Aircraft Maintenance Manual, Document Number GAC-AC-GVII-G500-AMM-0001, Revision 12, dated June 15, 2022; and Gulfstream Aerospace GVII-G600 Aircraft Maintenance Manual, Document Number GAC-AC-GVII-G600-AMM-0001, Revision 8, dated June 15, 2022.
Where Gulfstream GVII-G500 Customer Bulletin No. 069 and Gulfstream GVII-G600 Customer Bulletin No. 037, both Revision A, both dated February 2, 2023, specify to return any pump for repair, this AD requires replacing the pump in accordance with the applicable service information identified in paragraph (h) of this AD.
The requirements of paragraph (g) of this AD are terminated if all applicable actions required by paragraph (h) of this AD have been accomplished.
As of the effective date of the AD, no person may install on any airplane a fuel boost pump having a part and serial number specified in Table 1 of Gulfstream GVII-G500 Customer Bulletin No. 069 or Gulfstream GVII-G600 Customer Bulletin No. 037, both Revision A, both dated February 2, 2023, as applicable, unless that pump is marked with the letter “C” to the right of the “INSP” legend on the pump data area.
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.
