{"id":"F2006B11275","name":"AD/MCH/8 - Cabin Trim Head Shield - Installation","slug":"ad-mch-8-cabin-trim-head-shield-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57077,"registerId":"commonwealth-F2006B11275-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/MCH/8 - Cabin Trim Head Shield - Installation","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)  Aero Resources J2 Series Gyroplanes\n\n \n\nAD/MCH/8 Cabin Trim Head Shield - Installation 7/75\n\nApplicability: All model J2.\n\n \n\nRequirement: In accordance with a scheme approved by the Secretary, attach an aluminium cover plate to the cabin ‘A’ frame, in such a manner as to shield the cabin lining from heat damage caused by contact with the P/N 5513 engine access cover in the event of an engine fire.\n\n \n\nCompliance: Before 30 November 1975.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3237},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope, requiring a specific fire-protection modification for a single aircraft model series. It has not expanded to cover additional aircraft types or safety issues beyond the original cabin heat shield installation."},"complexity_factors":["Extremely brief text (approximately 100 words)","No defined terms or interpretation section","Single, unconditional mandate with no exceptions or nested conditions","Minimal cross-referencing (only to Civil Aviation Regulations Part 39 and the Secretary)","Specific, narrow applicability limited to a single aircraft model"],"plain_english_summary":"**What this directive requires**\n\nThis is an Airworthiness Directive — a mandatory aviation safety order — requiring owners of specific gyroplanes to install a protective heat shield.\n\n**Who is affected**\n\nOwners and operators of all Aero Resources Model J2 Series Gyroplanes.\n\n**The safety requirement**\n\nYou must attach an aluminium cover plate to the cabin 'A' frame (the structural frame supporting the cockpit). This plate acts as a heat shield to protect the cabin lining from burning or melting if the engine access cover overheats during an engine fire. The installation must follow a scheme approved by the Secretary (the senior government official responsible for aviation safety).\n\n**Why this matters**\n\nWithout this shield, an engine fire could heat the metal engine cover to temperatures high enough to ignite or damage the cabin interior, creating a serious risk to occupants.\n\n**Compliance deadline**\n\nThe modification had to be completed before 30 November 1975."}},"importantCases":[],"_links":{"self":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation","history":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation/history","analysis":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation/analysis","conflicts":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation/conflicts","importantCases":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation/important-cases","documents":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation/documents"}}