{"id":"F2006B03730","name":"AD/BEECH 23/12 - Attachment of ADF Noise Suppressor Capacitor","slug":"ad-beech-23-12-attachment-of-adf-noise-suppressor-capacitor","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43322,"registerId":"commonwealth-F2006B03730-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 23/12 - Attachment of ADF Noise Suppressor Capacitor","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)  Beechcraft 19, 23 and 24 Series Aeroplanes\n\n \n\nAD/BEECH 23/12 Attachment of ADF Noise Suppressor Capacitor\n\n\n6/67\n\n \n\nApplicability: Model A23-24 with S/Nos. MA-2, 3, 5, 9, 11, 24, 29, 31, 32, 33, 35, 44, 61, 64, 66,\n\n69, 71, 72, 76, 77, 81, 83, 89, 90, 102, 104, 105, 107, 108, 109, 111, 115,131 and 134.\n\n \n\nRequirement: Action in accordance with Beechcraft SB No. 66-65. Compliance: Before 1 September 1971.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1486},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope, targeting only specific serial numbers of the Beechcraft A23-24 model for the specific technical purpose of ADF noise suppression."},"complexity_factors":["Extremely short text with single operative requirement","Limited applicability to only 33 specific aircraft serial numbers","No defined terms, exceptions, or conditional provisions","Reliance on external technical document (Service Bulletin No. 66-65) for implementation details"],"plain_english_summary":"**What this does:** This is a safety rule (called an *Airworthiness Directive*) that requires owners of specific Beechcraft aeroplanes to install a noise filter (capacitor) on their aircraft's navigation radio.\n\n**Who it affects:** Owners of Beechcraft Model A23-24 aeroplanes with specific serial numbers only — MA-2, 3, 5, 9, 11, 24, 29, 31, 32, 33, 35, 44, 61, 64, 66, 69, 71, 72, 76, 77, 81, 83, 89, 90, 102, 104, 105, 107, 108, 109, 111, 115, 131 and 134.\n\n**What you must do:** Attach an ADF (Automatic Direction Finder) Noise Suppressor Capacitor by following the instructions in *Beechcraft Service Bulletin No. 66-65*. The ADF is the radio navigation equipment that helps pilots determine their direction.\n\n**Why it matters:** The capacitor suppresses electrical noise that could interfere with the aircraft's navigation system, preventing potential loss of directional guidance.\n\n**Compliance:** The modification had to be completed before 1 September 1971."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-23-12-attachment-of-adf-noise-suppressor-capacitor","history":"/api/acts/ad-beech-23-12-attachment-of-adf-noise-suppressor-capacitor/history","analysis":"/api/acts/ad-beech-23-12-attachment-of-adf-noise-suppressor-capacitor/analysis","conflicts":"/api/acts/ad-beech-23-12-attachment-of-adf-noise-suppressor-capacitor/conflicts","importantCases":"/api/acts/ad-beech-23-12-attachment-of-adf-noise-suppressor-capacitor/important-cases","documents":"/api/acts/ad-beech-23-12-attachment-of-adf-noise-suppressor-capacitor/documents"}}