{"id":"F2006B10016","name":"AD/G1159/15 Amdt 1 - Aileron Hydraulic System","slug":"ad-g1159-15-amdt-1-aileron-hydraulic-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55388,"registerId":"commonwealth-F2006B10016-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/15 Amdt 1 - Aileron Hydraulic System","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\n# AD/G1159/15\n\nAmdt 1\n\nApplicability: All models.\n\n# Aileron Hydraulic System 7/86\n\n \n\nRequirement: Action in accordance with Gulfstream Customer Bulletin 224A. Compliance:  As detailed in Requirement Document.\n\nBackground: Customer Bulletin 224A cancels Alert Customer Bulletin 7 and Customer Bulletin\n\n224. AD/G1159/15 had as its subject ACB #7. This amendment reflects the latest requirements of Gulfstream as published in CB 224A.\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":3122},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment updates the technical reference from older Gulfstream bulletins (ACB #7/CB 224) to the current standard (CB 224A), but remains focused on the original scope: maintaining the aileron hydraulic system on affected aircraft. No expansion of subject matter or affected parties."},"complexity_factors":["Single operative requirement incorporating an external technical document by reference","No defined terms or interpretation section","No conditional logic, exceptions, or nested provisions","Extremely short length (less than one page)"],"plain_english_summary":"**What this is:** A mandatory safety instruction (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority for specific Gulfstream aircraft.\n\n**Who it affects:** Owners and operators of Gulfstream G1159 and G-IV series aeroplanes (all models).\n\n**What you must do:** Carry out maintenance and inspections on the **aileron hydraulic system** exactly as described in Gulfstream Customer Bulletin 224A. (The ailerons are the flaps on the wings that control the aircraft's roll; their hydraulic system powers these critical flight controls.)\n\n**Why this matters:** This ensures the aileron hydraulic system works safely and prevents potential flight control failures.\n\n**What changed:** This update (Amendment 1) replaces the previous requirement to follow older manufacturer alerts (ACB #7 and CB 224) with the current standard (CB 224A). The safety goal remains the same—only the specific technical instructions have been updated."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-15-amdt-1-aileron-hydraulic-system","history":"/api/acts/ad-g1159-15-amdt-1-aileron-hydraulic-system/history","analysis":"/api/acts/ad-g1159-15-amdt-1-aileron-hydraulic-system/analysis","conflicts":"/api/acts/ad-g1159-15-amdt-1-aileron-hydraulic-system/conflicts","importantCases":"/api/acts/ad-g1159-15-amdt-1-aileron-hydraulic-system/important-cases","documents":"/api/acts/ad-g1159-15-amdt-1-aileron-hydraulic-system/documents"}}