{"id":"F2006B02194","name":"AD/AC-CLA/1 - Fore and Aft Canopy Tubes","slug":"ad-ac-cla-1-fore-and-aft-canopy-tubes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41424,"registerId":"commonwealth-F2006B02194-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC-CLA/1 - Fore and Aft Canopy Tubes","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 9/1964,Aircraft below 5700 kg,Aircraft Parts and Development (CALL AIR) A-9 Series Aeroplanes,Fore and Aft Canopy Tubes,1\ntitle: Airworthiness Directive - AD/AC-CLA/1 - Fore and Aft Canopy Tubes\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/1 Fore and Aft Canopy Tubes 9/64\n\nApplicability: All A-9 Series.\n\n \n\nRequirement: Modify the fore and aft tubes of the cockpit canopy, in the line of the pilot’s head, by the provision of an attachment to increase the effective radius of curvature to not less than 50 mm. Cover this attachment with suitable energy absorbing material of at least 25 mm thickness.\n\n \n\nCompliance: Before 1 September 1971.\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":1536},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains focused on its original purpose of requiring safety modifications to canopy tubes for head injury protection in Call Air A-9 aircraft. No expansion of scope beyond this specific airworthiness issue is evident."},"complexity_factors":["Single requirement contained in one paragraph","No interpretation section or defined terms","No cross-references to other legislative instruments","Clear applicability statement covering entire aircraft series","Specific but simple technical measurements (50mm radius, 25mm padding)"],"plain_english_summary":"**What it does:** This directive requires owners of Call Air A-9 aircraft to modify the cockpit canopy frame to improve pilot safety. The fore and aft canopy tubes (the metal bars running alongside the pilot's head position) must be fitted with attachments to round them off, ensuring the curve radius is at least 50mm. These attachments must then be covered with at least 25mm of padding (energy-absorbing material).\n\n**Who it affects:** All owners and operators of Aircraft Parts and Development (Call Air) A-9 series aeroplanes.\n\n**Why it matters:** This prevents serious head injuries by ensuring that if a pilot's head strikes the canopy frame during turbulence or an accident, the impact hits a rounded, padded surface rather than a sharp metal edge."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-cla-1-fore-and-aft-canopy-tubes","history":"/api/acts/ad-ac-cla-1-fore-and-aft-canopy-tubes/history","analysis":"/api/acts/ad-ac-cla-1-fore-and-aft-canopy-tubes/analysis","conflicts":"/api/acts/ad-ac-cla-1-fore-and-aft-canopy-tubes/conflicts","importantCases":"/api/acts/ad-ac-cla-1-fore-and-aft-canopy-tubes/important-cases","documents":"/api/acts/ad-ac-cla-1-fore-and-aft-canopy-tubes/documents"}}