Airworthiness directives › 2024-05-04
AD 2024-05-04 Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
Models named: GVII-G500, GVII-G600. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
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.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
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.
Unsafe condition
This AD was prompted by a report of misassembled impellers onto the shaft of the fuel boost pump during production. The FAA is issuing this AD to prevent the ignition of flammable vapors in the fuel tank as a result of frictional heating or sparks caused by a missing, misplaced, or dislodged impeller shaft key inside the fuel boost pump. The unsafe condition, if not addressed, could result in a potential source of ignition in the fuel tank and consequent fire or explosion.
Affected ADs
This AD replaces AD 2020-23-04, Amendment 39-21320 (85 FR 71232, November 9, 2020) (AD 2020-23-04).
Read the original on the Federal Register →
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