{"id":"F2006B11268","name":"AD/MCH/1 - Seat Restraint Installation - Modification","slug":"ad-mch-1-seat-restraint-installation-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57062,"registerId":"commonwealth-F2006B11268-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/MCH/1 - Seat Restraint Installation - Modification","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/1 Seat Restraint Installation - Modification 8/73\n\nApplicability: All model J2.\n\n \n\nRequirement: Modify each seat restraint installation by fitting a safety harness in accordance with a scheme approved by the Secretary.\n\n \n\nCompliance: Before issue of Certificate of Airworthiness.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1690},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope focused exclusively on seat restraint modifications for the Aero Resources J2 gyroplane model. There is no evidence of scope expansion into other aircraft types or unrelated safety systems."},"complexity_factors":["Single, unconditional requirement with no exceptions or provisos","No defined terms, interpretation sections, or legislative cross-references","Extremely narrow applicability (only one specific aircraft model)","Plain language requirement with no technical regulatory jargon"],"plain_english_summary":"**What this is:** A safety rule requiring seatbelt upgrades for a specific type of light aircraft.\n\n**Who it affects:** Owners and operators of **Aero Resources J2 Series Gyroplanes** (small rotorcraft often called gyrocopters).\n\n**What it requires:** You must install a proper safety harness (seatbelt system) in each seat according to a design approved by the Secretary (the senior government official responsible for aviation safety at the time).\n\n**When it must be done:** Before the aircraft can receive a Certificate of Airworthiness — meaning the aircraft cannot be legally flown until this modification is complete.\n\n**Why it matters:** This ensures pilots and passengers are properly restrained during flight, reducing the risk of serious injury or death during turbulence or accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-mch-1-seat-restraint-installation-modification","history":"/api/acts/ad-mch-1-seat-restraint-installation-modification/history","analysis":"/api/acts/ad-mch-1-seat-restraint-installation-modification/analysis","conflicts":"/api/acts/ad-mch-1-seat-restraint-installation-modification/conflicts","importantCases":"/api/acts/ad-mch-1-seat-restraint-installation-modification/important-cases","documents":"/api/acts/ad-mch-1-seat-restraint-installation-modification/documents"}}