{"id":"F2006B11079","name":"AD/LA-4/5 - Battery Relay - Installation","slug":"ad-la-4-5-battery-relay-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56733,"registerId":"commonwealth-F2006B11079-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LA-4/5 - Battery Relay - 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)  Consolidated Aeronautics, Colonial and LA-4 Series Aeroplanes\n\n \n\nAD/LA-4/5 Battery Relay - Installation 4/72\n\nApplicability: All Lake LA-4-200 models.\n\n \n\nRequirement: Install a battery relay adjacent to the battery so that battery power can be disconnected in flight from the heavy duty cables at a point as close to the battery as possible.\n\n \n\nCompliance: Before issue of a Certificate of Airworthiness or within 200 hours time in service after 31 May 1972.\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":859},"content_quality":"ok","complexity_score":1,"rejection_reason":"","scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope: a specific safety modification for a single aircraft type (Lake LA-4-200). There is no evidence of scope creep or expansion beyond the initial electrical safety purpose."},"complexity_factors":["Single, unambiguous operative requirement with no conditional clauses","No defined terms section or interpretation provisions","No cross-references to other legislative instruments","Simple binary applicability test (specific aircraft model only)","Straightforward compliance deadline (date-based or flight hours-based)"],"plain_english_summary":"This mandatory Airworthiness Directive affects owners/operators of Lake LA-4-200 amphibious aircraft. It requires installation of a battery relay adjacent to the battery so the pilot can fully disconnect battery power in flight, cutting heavy cables close to the source.\n\nIt matters because, in an in-flight electrical fire or short, the relay provides an emergency kill to stop live cables feeding a fire. Compliance is required before registration or within 200 flight hours after 31 May 1972."}},"importantCases":[],"_links":{"self":"/api/acts/ad-la-4-5-battery-relay-installation","history":"/api/acts/ad-la-4-5-battery-relay-installation/history","analysis":"/api/acts/ad-la-4-5-battery-relay-installation/analysis","conflicts":"/api/acts/ad-la-4-5-battery-relay-installation/conflicts","importantCases":"/api/acts/ad-la-4-5-battery-relay-installation/important-cases","documents":"/api/acts/ad-la-4-5-battery-relay-installation/documents"}}