Airworthiness Directive · Amendment 39-22418 · Flight controls
Gulfstream Aerospace Corporation Airplanes
This AD applies to the Gulfstream Aerospace Corporation airplanes identified in paragraphs (c)(1) through (4) of this AD, certificated in any category.
(1) Model G-1159A airplanes having serial numbers (S/Ns) 385, 387, 388, and 390 through 498 inclusive.
(2) Model G-1159B airplanes having S/Ns 009, 016, 042, 048, 054, 064, 086, 088, 095, 098, 102, 119, 123, 125, 131, 140, 151, 154, 155, 156, 165, 166, 189, 198, 199, 207, 219, 237, 245, 254, 255, and 257.
(3) Model G-IV airplanes, all serial numbers.
(4) Model GIV-X airplanes, all serial numbers.
Note 1 to paragraph (c): Some Model G-IV airplanes are also referred to by the marketing designations G300, G400, and GIV-SP.
Note 2 to paragraph (c): Some Model GIV-X airplanes are also referred to by the marketing designations G350 and G450.
The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation Model G-1159A and G-1159B airplanes and all Model G-IV and GIV-X airplanes. This AD was prompted by a report that the ground spoiler actuator installation does not preclude improper hydraulic line connections that could result in unintended asymmetrical spoiler deployment. This AD requires incorporating corrective actions that physically prevent improper connection of the hydraulic lines to the ground spoiler actuator. The FAA is issuing this AD to address the unsafe condition on these products.
For Model G-1159A, G-1159B, and G-IV airplanes: Within 18 months after the effective date of this AD, incorporate corrective actions (includes replacing a ground spoiler actuator hydraulic hose and associated fittings) that physically prevent improper connection of the hydraulic lines to the ground spoiler actuator, in accordance with a method approved by the Manager, Atlanta ACO Branch, FAA. Accomplishment of the actions specified in the applicable service information in paragraphs (g)(1) through (5) of this AD is acceptable for compliance with the requirements of this paragraph.
(1) Gulfstream G300 Customer Bulletin No. 250, dated November 9, 2022.
(2) Gulfstream G400 Customer Bulletin No. 250, dated November 9, 2022.
(3) Gulfstream GII-GIIB Customer Bulletin No. 471, dated November 9, 2022.
(4) Gulfstream GIII Customer Bulletin No. 189, dated November 9, 2022.
(5) Gulfstream GIV Customer Bulletin No. 250, dated November 9, 2022.
For Model GIV-X airplanes: Within 60 months after the effective date of this AD, incorporate corrective actions (includes replacing a ground spoiler actuator hydraulic hose and associated fittings) that physically prevent improper connection of the hydraulic lines to the ground spoiler actuator, in accordance with a method approved by the Manager, Atlanta ACO Branch, FAA.
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.
