{"id":"F2006B02198","name":"AD/AC-CLA/5 - Shock Strut Assembly","slug":"ad-ac-cla-5-shock-strut-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41428,"registerId":"commonwealth-F2006B02198-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC-CLA/5 - Shock Strut Assembly","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 4/1975,Aircraft below 5700 kg,Aircraft Parts and Development (CALL AIR) A-9 Series Aeroplanes,Shock Strut Assembly,5\ntitle: Airworthiness Directive - AD/AC-CLA/5 - Shock Strut Assembly\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)  Aircraft Parts and Development (CALL AIR) A-9 Series Aeroplanes\n\n \n\nAD/AC-CLA/5 Shock Strut Assembly 4/75\n\nApplicability: All A-9 series.\n\n \n\nRequirement: Main landing gear shock strut assemblies P/N 12018 shall be disassembled and inspected for general condition.\n\n \n\nNote: Particular attention should be paid to the bore of the tube for reduction of wall thickness due to contact with the inner spring.\n\n \n\nCompliance: At next major inspection after 30 April 1975 and thereafter at each major inspection.\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":2169},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This appears to be the original 1975 directive (Issue 4/75) maintaining its original narrow scope regarding shock strut inspections for the Call Air A-9 aircraft series."},"complexity_factors":["Extremely short document (approximately 70 words of operative text)","Single discrete requirement with no exceptions or conditional logic","No defined terms or interpretation section","No cross-references to other legislative provisions","Clear, unambiguous compliance date tied to existing maintenance schedule"],"plain_english_summary":"This **Airworthiness Directive** (a mandatory safety order issued by the aviation regulator) requires specific maintenance checks on landing gear components to prevent mechanical failures.\n\n**Who it affects**\nOwners and operators of all **Call Air A-9 series** aeroplanes (light aircraft made by Aircraft Parts and Development).\n\n**What it requires**\nYou must remove and disassemble the main landing gear shock struts (part number 12018) during major maintenance checks to:\n* Inspect the general condition of the assembly\n* Check specifically for dangerous thinning of the tube walls caused by rubbing against the internal spring\n\n**When**\nAt the first major inspection after 30 April 1975, and then again at every subsequent major inspection.\n\n**Why this matters**\nWorn or damaged shock struts could fail during landing, potentially causing the landing gear to collapse and resulting in serious accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-cla-5-shock-strut-assembly","history":"/api/acts/ad-ac-cla-5-shock-strut-assembly/history","analysis":"/api/acts/ad-ac-cla-5-shock-strut-assembly/analysis","conflicts":"/api/acts/ad-ac-cla-5-shock-strut-assembly/conflicts","importantCases":"/api/acts/ad-ac-cla-5-shock-strut-assembly/important-cases","documents":"/api/acts/ad-ac-cla-5-shock-strut-assembly/documents"}}