{"id":"F2006B06480","name":"AD/RAD/15 - Localiser Flag Circuit - Modification","slug":"ad-rad-15-localiser-flag-circuit-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47997,"registerId":"commonwealth-F2006B06480-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/RAD/15 - Localiser Flag Circuit - 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 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Radio Communication and Navigation Equipment\n\n \n\nAD/RAD/15 Localiser Flag Circuit - Modification 9/65\n\nApplicability: VHF COM/NAV Equipment ARC Type 317A.\n\n \n\nRequirement: Modify equipment so that localiser flag circuit is energised by the output of the 90 and 150 cycle filters.\n\n \n\nNote: Incorporation of the relevant section of Rex Aviation Radio Design Change No. 6 is an acceptable means of compliance.\n\n \n\nCompliance: Before 1 January 1966.\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":1808},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This 1965 directive maintains a tightly focused technical scope targeting a single safety-critical modification to specific radio equipment. No evidence of scope creep or expansion beyond the original equipment modification purpose."},"complexity_factors":["Extremely brief (approximately 50 words of substantive content)","Single applicability criterion (one specific equipment model)","Single unconditional requirement with no exceptions or provisos","No definitions section or interpretation clauses","Only one alternative compliance method referenced"],"plain_english_summary":"Owners and operators of ARC Type 317A VHF comm/nav units must modify the localiser flag circuit so it’s powered from the outputs of the 90 and 150 cycle filters. \n\nThis mandatory fix (or the approved alternative, Rex Aviation Radio Design Change No. 6) prevents false localiser indications during approaches, preserving reliable guidance for safe instrument landings."}},"importantCases":[],"_links":{"self":"/api/acts/ad-rad-15-localiser-flag-circuit-modification","history":"/api/acts/ad-rad-15-localiser-flag-circuit-modification/history","analysis":"/api/acts/ad-rad-15-localiser-flag-circuit-modification/analysis","conflicts":"/api/acts/ad-rad-15-localiser-flag-circuit-modification/conflicts","importantCases":"/api/acts/ad-rad-15-localiser-flag-circuit-modification/important-cases","documents":"/api/acts/ad-rad-15-localiser-flag-circuit-modification/documents"}}