{"id":"F2006B02415","name":"AD/ANSON/18 - Attachment Bolts - Inspection","slug":"ad-anson-18-attachment-bolts-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41658,"registerId":"commonwealth-F2006B02415-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ANSON/18 - Attachment Bolts - 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/18 Attachment Bolts - Inspection 10/62\n\nApplicability: Anson and Avro 19.\n\n \n\nDocument: Avro TSB No. 80 paras. 2.2 to 2.3 and TSB No. 88.\n\n \n\nCompliance: At intervals not exceeding 4,000 hours time in service or 5 years whichever is less.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The excerpt sets a clear, limited scope: applicability to Anson and Avro 19 aircraft and a fixed recurring inspection interval. There is no text in this excerpt indicating an expansion, narrowing, or other change to that scope from an earlier or different version."},"complexity_factors":["Narrow applicability limited to two aircraft types (Applicability), which reduces breadth of stakeholders.","Single, simple compliance rule (inspection interval: 4,000 hours or 5 years) — straightforward scheduling requirement (Compliance).","Reliance on external technical service bulletins (Avro TSB No. 80 paras. 2.2–2.3 and TSB No. 88) for procedural detail increases practical complexity because implementers must obtain and interpret those documents (Document).","The excerpt lacks procedural, enforcement, and qualification detail (who may perform inspections; recordkeeping; remedies for non‑compliance), requiring implementers to consult additional material or regulators.","Potential ambiguity in operational detail: the AD specifies the timing but not the precise inspection steps in the excerpt, creating implementation dependence on the referenced TSBs."],"plain_english_summary":"This AD requires recurring inspections of attachment bolts on Avro Anson and Avro 19 aircraft at intervals not exceeding 4,000 flight hours or 5 years, whichever is less. It directs operators and maintenance providers to Avro TSB No. 80 (paras. 2.2–2.3) and TSB No. 88 for the inspection procedures.\n\nIt affects owners/operators (who bear inspection costs and scheduling) and maintenance organisations, creating recurring workload and compliance obligations but leaving technical detail and resource requirements to the referenced TSBs."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1962 (as indicated by the '10/62' suffix). It has not expanded beyond its original narrow purpose of mandating bolt inspections on specific vintage aircraft types. Airworthiness directives are typically narrow, technical instruments and this one remains confined to its original safety purpose."},"complexity_factors":["Extremely short document — only 4 substantive lines of regulatory content","No defined terms section — all terms are common aviation parlance","No cross-references to other legislation beyond the enabling regulation (Civil Aviation Regulations 1998, Part 39)","Simple conditional logic: single compliance trigger (time-based, not flight cycle or condition-based)","No exceptions, exemptions, or nested conditions","References external technical documents (Avro TSBs) but does not reproduce their content"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998. It applies to **Avro Anson and Avro 19 series aircraft** — these are vintage British twin-engine planes from the 1930s-40s, originally military trainers and light transports.\n\n**What it requires:**\n- **Inspection of attachment bolts** on these aircraft\n- **How often:** Every 4,000 flight hours **or** every 5 years, whichever comes first\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety orders. They are issued when a safety problem is discovered that could affect aircraft structural integrity or flight safety. In this case, specific technical service bulletins (TSB No. 80 and TSB No. 88 from the manufacturer Avro) identified issues with attachment bolts that needed mandatory inspection. Owners and operators must comply or the aircraft cannot legally fly.\n\n**Who it affects:**\n- Owners and operators of these specific vintage aircraft\n- Maintenance organisations servicing them\n- Pilots flying them (indirectly, as they must ensure compliance)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-anson-18-attachment-bolts-inspection","history":"/api/acts/ad-anson-18-attachment-bolts-inspection/history","analysis":"/api/acts/ad-anson-18-attachment-bolts-inspection/analysis","conflicts":"/api/acts/ad-anson-18-attachment-bolts-inspection/conflicts","importantCases":"/api/acts/ad-anson-18-attachment-bolts-inspection/important-cases","documents":"/api/acts/ad-anson-18-attachment-bolts-inspection/documents"}}