{"id":"F2006B08641","name":"AD/CON/64 - Induction Elbow","slug":"ad-con-64-induction-elbow","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51675,"registerId":"commonwealth-F2006B08641-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CON/64 - Induction Elbow","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 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Teledyne Continental Motors Piston Engines\n\n \n\nAD/CON/64 Induction Elbow 13/92\n\nApplicability: All TSIO-520-J and N series engines fitted with a P/N 629138 intake elbow tube. Requirement:               Inspect and assemble P/N 635930 flexible intake elbows in accordance with\n\nContinental Aircraft Engine Service Bulletin M78-5 Rev.3.\n\n \n\nNote: FAA Airworthiness Directive 78-06-01 refers.\n\nCompliance:  Effective 10 December 1992: At intervals not to exceed 110 hours time in service. Background:              The requirements of AD/CON/35A have been reissued following review of all\n\nContinental Piston Engine Directives. The requirements of FAA Airworthiness\n\nDirective 78-06-01 are still effective and appropriate.\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":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope not changed. The instrument restates the requirements of the previous AD (Background: 'The requirements of AD/CON/35A have been reissued') and confines applicability to 'All TSIO‑520‑J and N series engines fitted with a P/N 629138 intake elbow tube' while requiring inspection/assembly of P/N 635930 flexible intake elbows per Service Bulletin M78‑5 Rev.3, at intervals not to exceed 110 hours (Applicability; Requirement; Compliance)."},"complexity_factors":["Technical specificity: precise part numbers cited (P/N 629138 intake elbow; P/N 635930 flexible intake elbow) increases need for accurate parts identification.","External document reliance: directs compliance with Continental Aircraft Engine Service Bulletin M78‑5 Rev.3 — requires access to and following an outside technical document.","Recurring compliance interval: inspection/assembly must be repeated at intervals not to exceed 110 hours time in service — creates ongoing maintenance scheduling and cost.","Narrow applicability: limited to TSIO‑520‑J and ‑N engines fitted with the specific intake elbow — reduces the affected population, simplifying regulatory reach.","Regulatory layering: cross‑references earlier AD/CON/35A reissue and FAA AD 78‑06‑01 (Background/Note) — requires readers to track related directives.","Implementation detail gap: the AD delegates inspection/assembly technique and detailed steps to the service bulletin rather than specifying them in the AD text, increasing dependence on the bulletin for compliance specifics."],"plain_english_summary":"Requires inspection and assembly of P/N 635930 flexible intake elbows on Teledyne Continental TSIO‑520‑J and ‑N engines fitted with P/N 629138 intake elbow, carried out in accordance with Continental Aircraft Engine Service Bulletin M78‑5 Rev.3. Compliance is recurring, at intervals not to exceed 110 hours time‑in‑service. Affects owners, operators and maintenance organisations of these engines; it prescribes a specific recurring maintenance action tied to airworthiness (see FAA AD 78‑06‑01)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, standalone airworthiness directive with a narrow, specific safety purpose. It has not expanded beyond its original intent of addressing a known defect in specific engine intake elbows. The document explicitly notes it is a reissue of earlier requirements (AD/CON/35A) following a review, not an expansion of scope."},"complexity_factors":["Single, specific applicability clause targeting only two engine series with one specific part","Single mechanical requirement referencing an external manufacturer document (Service Bulletin M78-5 Rev.3)","Simple compliance trigger: fixed calendar date plus recurring hourly interval (110 hours TIS)","No defined terms section, no cross-references to other legislation beyond the noted FAA AD","No conditional logic, exceptions, or nested provisions","Total length: approximately 150 words of substantive content"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft engines.\n\n**What it does:**\nIt requires owners and operators of specific Teledyne Continental Motors piston engines (TSIO-520-J and N series) to inspect and properly install a particular flexible intake elbow part (P/N 635930) according to the manufacturer's service bulletin.\n\n**Who it affects:**\nAnyone operating aircraft with these specific engine models that have a particular intake elbow tube installed (part number 629138). This typically includes private pilots, flying schools, charter operators, and maintenance organisations working on these engines.\n\n**Why it matters:**\nIntake elbows are critical components that deliver air to the engine. If they fail or are improperly installed, the engine could lose power or fail completely — a serious safety risk in flight. This directive ensures a known problem is checked and fixed before it causes an accident.\n\n**Key requirements:**\n- **Inspection and assembly** must follow Continental's Service Bulletin M78-5 (Revision 3)\n- **Compliance deadline:** Started 10 December 1992\n- **Repeat interval:** Every 110 hours of engine running time (\"time in service\")\n- **Background:** This replaced an earlier directive (AD/CON/35A) and aligns with a US Federal Aviation Administration (FAA) safety order on the same issue"}},"importantCases":[],"_links":{"self":"/api/acts/ad-con-64-induction-elbow","history":"/api/acts/ad-con-64-induction-elbow/history","analysis":"/api/acts/ad-con-64-induction-elbow/analysis","conflicts":"/api/acts/ad-con-64-induction-elbow/conflicts","importantCases":"/api/acts/ad-con-64-induction-elbow/important-cases","documents":"/api/acts/ad-con-64-induction-elbow/documents"}}