{"id":"F2006B02106","name":"AD/AC/47 - Front Seat Restraint Installation - Modification","slug":"ad-ac-47-front-seat-restraint-installation-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41336,"registerId":"commonwealth-F2006B02106-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC/47 - Front Seat Restraint Installation - Modification","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 8/1972,Aircraft below 5700 kg,Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes,Front Seat Restraint Installation - Modification,47\ntitle: Airworthiness Directive - AD/AC/47 - Front Seat Restraint Installation - Modification\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)  Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes\n\n \n\nAD/AC/47 Front Seat Restraint Installation - Modification 8/72\n\nApplicability: All models.\n\n \n\nRequirement: Modify each front seat restraint installation by fitting a safety harness in accordance with a scheme approved by the Secretary.\n\n \n\nCompliance: Before 1 August 1973.\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":1657},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope of requiring front seat safety harness installation in the specified Twin Commander aircraft fleet. There is no evidence of expansion beyond this specific airworthiness modification."},"complexity_factors":["Single sentence requirement with no conditional clauses","No defined terms or interpretation section","No cross-references to other legislation","Simple, unqualified applicability ('All models')","Single, absolute compliance date"],"plain_english_summary":"**What this does**\nThis Airworthiness Directive mandates a safety upgrade for specific aircraft by requiring the installation of proper seatbelts (safety harnesses) in the front seats.\n\n**Who is affected**\nOwners and operators of Twin Commander aircraft, specifically the Gulfstream/Rockwell/Aerocommander 500, 600, and 700 series models.\n\n**What you must do**\nModify the front seat restraint systems by fitting a safety harness. The installation must follow a plan (scheme) approved by the Secretary of the aviation safety authority.\n\n**The deadline**\nThe modifications had to be completed before 1 August 1973.\n\n**Why it matters**\nThis ensures pilots and front-seat passengers have proper restraint systems to reduce the risk of injury during turbulence, hard landings, or accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-47-front-seat-restraint-installation-modification","history":"/api/acts/ad-ac-47-front-seat-restraint-installation-modification/history","analysis":"/api/acts/ad-ac-47-front-seat-restraint-installation-modification/analysis","conflicts":"/api/acts/ad-ac-47-front-seat-restraint-installation-modification/conflicts","importantCases":"/api/acts/ad-ac-47-front-seat-restraint-installation-modification/important-cases","documents":"/api/acts/ad-ac-47-front-seat-restraint-installation-modification/documents"}}