{"id":"F2006B11080","name":"AD/LA-4/6 - Front Seat Restraint Installation - Modification","slug":"ad-la-4-6-front-seat-restraint-installation-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56735,"registerId":"commonwealth-F2006B11080-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LA-4/6 - Front Seat Restraint Installation -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)  Consolidated Aeronautics, Colonial and LA-4 Series Aeroplanes\n\n \n\nAD/LA-4/6 Front Seat Restraint Installation - Modification 9/72\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\nNote: Guidelines for installation schemes are outlined in Airworthiness Advisory Circular No. 62 dated March 1972.\n\n \n\nCompliance: Before 1 October 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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1788},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, technical scope focused solely on front seat harness installation for a specific aircraft series. There is no evidence of scope expansion beyond the original safety purpose of improving occupant restraint systems."},"complexity_factors":["Single operative requirement spanning one sentence","No defined terms or interpretation section","Only four structural elements (Applicability, Requirement, Note, Compliance)","Single external reference to advisory material","No conditional exceptions or nested provisions"],"plain_english_summary":"**What this directive does**\n\nThis Airworthiness Directive mandates a safety upgrade for specific aircraft: Consolidated Aeronautics, Colonial, and LA-4 series aeroplanes. It requires owners to install safety harnesses in the front seats to better protect occupants during flight.\n\n**Who it affects**\n- Owners and operators of all models in the Consolidated Aeronautics, Colonial, and LA-4 aircraft series\n\n**What you must do**\n- Modify every front seat restraint system by installing a safety harness\n- Use an installation plan (scheme) that has been officially approved by the Secretary\n- Follow the technical guidelines outlined in Airworthiness Advisory Circular No. 62 (dated March 1972)\n\n**Compliance deadline**\n- The modification had to be completed before 1 October 1973\n\n**Why it matters**\nThis is a mandatory safety requirement designed to ensure front seat passengers and pilots are properly restrained, reducing injury risk during turbulence or accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-la-4-6-front-seat-restraint-installation-modification","history":"/api/acts/ad-la-4-6-front-seat-restraint-installation-modification/history","analysis":"/api/acts/ad-la-4-6-front-seat-restraint-installation-modification/analysis","conflicts":"/api/acts/ad-la-4-6-front-seat-restraint-installation-modification/conflicts","importantCases":"/api/acts/ad-la-4-6-front-seat-restraint-installation-modification/important-cases","documents":"/api/acts/ad-la-4-6-front-seat-restraint-installation-modification/documents"}}