{"id":"F2006B02413","name":"AD/ANSON/16 Amdt 1 - Fuselage and Fin Structure - Inspection","slug":"ad-anson-16-amdt-1-fuselage-and-fin-structure-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41656,"registerId":"commonwealth-F2006B02413-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ANSON/16 Amdt 1 - Fuselage and Fin Structure - Inspection","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)  Avro Anson and Avro 19 Series Aeroplanes\n\n \n\nAD/ANSON/16\n\nAmdt 1\n\n\nFuselage and Fin Structure - Inspection 11/67\n\n \n\nApplicability: Anson and Avro 19.\n\n \n\nDocument: Avro TSB No. 80 paragraphs 1.1 to 1.8. Compliance:  At intervals not exceeding 100 hours time in service.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\nS\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":"The directive specifies inspections for fuselage and fin structure on Avro Anson and Avro 19 aircraft and requires compliance with Avro TSB No. 80 at intervals not exceeding 100 hours time in service. The source text contains no indication that the scope has been expanded or narrowed relative to its stated purpose."},"complexity_factors":["Narrow applicability limited to two aircraft types (Anson and Avro 19)","Single compliance requirement (inspect fuselage and fin) with a clear interval (≤100 hours TIS)","Cross-reference to an external technical document (Avro TSB No. 80 paragraphs 1.1–1.8) for procedural detail","Regulatory context under Part 39 (Schedule of Airworthiness Directives) implies enforceability but does not add procedural complexity within the text of the AD"],"plain_english_summary":"### What this directive does\n\nThis airworthiness directive (AD/ANSON/16 Amdt 1) requires regular inspections of the fuselage and fin structure on Avro Anson and Avro 19 aeroplanes. The inspections must be carried out in accordance with the procedures set out in Avro TSB No. 80 (paragraphs 1.1–1.8). (See: \"Applicability\" and \"Document\".)\n\n### Who issues the rule and who it applies to\n\n- The rule is issued under the Commonwealth Civil Aviation Regulations as an item in the Schedule of Airworthiness Directives administered by the Civil Aviation Safety Authority (CASA). (See header: Part 39 - 105 and AD title.)\n- It applies specifically to Avro Anson and Avro 19 aircraft. (See: \"Applicability\".)\n\n### What owners/operators must do\n\n- Inspect the fuselage and fin structure at intervals not exceeding 100 hours time in service. (See: \"Compliance: At intervals not exceeding 100 hours time in service.\")\n- Follow the inspection procedures and any specified actions set out in Avro TSB No. 80, paragraphs 1.1–1.8. (See: \"Document: Avro TSB No. 80 paragraphs 1.1 to 1.8.\")\n\n### Who bears the costs and what changes in behaviour are required\n\n- Aircraft owners and operators of the listed types bear the direct costs: labour, potential parts, and aircraft downtime needed to perform the inspections and any corrective work uncovered by them. (Implied by the directive's inspection requirement and compliance interval.)\n- Maintenance organisations and certificated engineers must schedule recurring inspections, keep records, and apply the TSB procedures. This creates a recurring operational burden tied to flight hours.\n\n### How the rule works mechanically (incentives, compliance, discretion)\n\n- The AD creates a legally enforceable inspection obligation for the specified aircraft types; compliance is demonstrated by following Avro TSB No. 80 paragraphs 1.1–1.8 and by performing inspections no less frequently than every 100 hours time in service. (See: \"Document\" and \"Compliance\".)\n- The primary incentive is regulatory: operators must comply to maintain airworthiness certification and legal permission to fly.\n- Discretion rests in two places: (1) CASA as the issuing authority can set and amend ADs under Part 39, and (2) maintenance personnel must interpret and implement the TSB procedures during inspections. The AD itself cross-references the TSB for technical detail rather than reproducing procedures. (See: Part 39 header and \"Document\".)\n\n### Trade-offs, implementation risks and administrative burdens\n\n- Trade-offs: the directive substitutes routine inspection costs (recurring) for the risk of undetected structural issues (diffuse benefit to safety). The direct costs are concentrated on owners/operators of the specified types; benefits of the inspections are spread across users of the airspace.\n- Implementation risks: if Avro TSB No. 80 is ambiguous, maintenance personnel or CASA may need to exercise judgement about the exact actions required. The AD’s brevity (referencing an external TSB) increases dependence on that external document for procedural clarity. (See: \"Document\" reference.)\n- Administrative burdens: scheduling inspections every 100 hours time in service, recordkeeping, and potential unscheduled repairs following inspections.\n\nSources in instrument: AD title and date (AD/ANSON/16 Amdt 1, Fuselage and Fin Structure - Inspection, 11/67); Applicability: \"Anson and Avro 19\"; Document reference: \"Avro TSB No. 80 paragraphs 1.1 to 1.8\"; Compliance: \"At intervals not exceeding 100 hours time in service.\""},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, technical maintenance directive for specific vintage aircraft types. It has not expanded beyond its original purpose of ensuring structural integrity through periodic inspection."},"complexity_factors":["Extremely short document—only 4 substantive lines of regulatory text","No defined terms section; relies on external reference to manufacturer document (Avro TSB No. 80)","Single, unambiguous compliance requirement (100-hour intervals)","No nested exceptions, conditional logic, or cross-references to other legislation","Simple applicability statement covering only two aircraft types"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by the Civil Aviation Safety Authority (CASA) for specific vintage British aircraft—the **Avro Anson** and **Avro 19** series aeroplanes.\n\n**What it does:**\n- Requires regular **inspections of the fuselage (main body) and fin (vertical tail) structure** of these aircraft.\n- Mandates compliance with **Avro Technical Service Bulletin (TSB) No. 80**, paragraphs 1.1 to 1.8—a manufacturer document detailing specific inspection procedures.\n\n**Who it affects:**\n- Owners and operators of Avro Anson and Avro 19 aircraft (mostly historical/vintage aircraft now).\n- Maintenance organisations servicing these aircraft types.\n\n**Why it matters:**\n- These aircraft designs date back to the 1930s-1940s. Structural fatigue and corrosion in old airframes pose serious safety risks.\n- The directive ensures ongoing airworthiness by catching structural problems before they cause failure.\n- **Compliance is mandatory**—failure to inspect every 100 hours of flight time grounds the aircraft legally.\n\n**Key requirement:**\n- Inspections must occur **every 100 hours of \"time in service\"** (flight time, not calendar time)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-anson-16-amdt-1-fuselage-and-fin-structure-inspection","history":"/api/acts/ad-anson-16-amdt-1-fuselage-and-fin-structure-inspection/history","analysis":"/api/acts/ad-anson-16-amdt-1-fuselage-and-fin-structure-inspection/analysis","conflicts":"/api/acts/ad-anson-16-amdt-1-fuselage-and-fin-structure-inspection/conflicts","importantCases":"/api/acts/ad-anson-16-amdt-1-fuselage-and-fin-structure-inspection/important-cases","documents":"/api/acts/ad-anson-16-amdt-1-fuselage-and-fin-structure-inspection/documents"}}