{"id":"F2006B10025","name":"AD/G1159/23 Amdt 2 - Main Landing Gear Side Brace Actuating Cylinders - Inspection","slug":"ad-g1159-23-amdt-2-main-landing-gear-side-brace-actuating-cylinders-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55415,"registerId":"commonwealth-F2006B10025-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/23 Amdt 2 - Main Landing Gear Side Brace Actuating Cylinders - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes\n\n \n\nAD/G1159/23\n\nAmdt 2\n\n\nMain Landing Gear Side Brace Actuating Cylinders - Inspection\n\n\n11/80\n\n \n\nApplicability: All models with actuators installed as per requirement document. Document:  Grumman Customer Bulletin No. 286A, Amendment 1.\n\nCompliance: As per requirement document.\n\n \n\nBackground:  Further research by the manufacturer has indicated that an extension of actuator overhaul period is warranted.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1896},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment adjusts the compliance timing (extending overhaul intervals) but does not alter the fundamental scope of affected aircraft models or components. The coverage remains limited to the specific main landing gear actuators on G1159 and G-IV series aircraft as originally intended."},"complexity_factors":["Delegates all substantive requirements to an external technical document (Grumman Customer Bulletin No. 286A)","Extremely brief legislative text (under 100 words of substance)","Assumes technical knowledge of aircraft maintenance terminology and airworthiness directive systems"],"plain_english_summary":"This Airworthiness Directive applies to certain Gulfstream G1159/G‑IV series jets and requires compliance with Grumman Customer Bulletin No. 286A, Amendment 1 for the hydraulic cylinders that lock the main landing gear side braces. Based on manufacturer data, it extends the allowable overhaul interval for those actuators—reducing maintenance cost and downtime while preserving safety—for owners/operators of affected aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-23-amdt-2-main-landing-gear-side-brace-actuating-cylinders-inspection","history":"/api/acts/ad-g1159-23-amdt-2-main-landing-gear-side-brace-actuating-cylinders-inspection/history","analysis":"/api/acts/ad-g1159-23-amdt-2-main-landing-gear-side-brace-actuating-cylinders-inspection/analysis","conflicts":"/api/acts/ad-g1159-23-amdt-2-main-landing-gear-side-brace-actuating-cylinders-inspection/conflicts","importantCases":"/api/acts/ad-g1159-23-amdt-2-main-landing-gear-side-brace-actuating-cylinders-inspection/important-cases","documents":"/api/acts/ad-g1159-23-amdt-2-main-landing-gear-side-brace-actuating-cylinders-inspection/documents"}}