{"id":"F2006B07064","name":"AD/SM-205/6 - Nose Gear Drag Brace Link P/N 205-9-142-03 - Replacement","slug":"ad-sm-205-6-nose-gear-drag-brace-link-p-n-205-9-142-03-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48808,"registerId":"commonwealth-F2006B07064-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-205/6 - Nose Gear Drag Brace Link P/N 205-9-142-03 - Replacement","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)  SIAI Marchetti S205 and S208 Series Aeroplanes\n\n \n\nAD/SM-205/6  Nose Gear Drag Brace Link P/N 205-9-142-03 - Replacement\n\nApplicability: Models S205-18/R, S205-20/R and S205-22/R with S/Nos. 106 to 239. Document:  SIAI Marchetti SB 205B12.\n\nCompliance: Before 31 March 1971.\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\n3/71\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue Airworthiness Directive from 1971 (as indicated by the '3/71' marking). It addresses one specific mechanical defect in a limited fleet of aircraft. There is no evidence of scope creep; the document remains tightly focused on its original safety purpose."},"complexity_factors":["Extremely short document (approximately 150 words)","No defined terms section — all terms are standard aviation nomenclature","No cross-references to other legislation beyond the enabling regulation (Civil Aviation Regulations 1998, Part 39)","Single, unambiguous compliance requirement with a fixed deadline","No conditional logic, exceptions, or nested provisions","Clear applicability criteria (specific models and serial number range)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations.\n\n**What it does:**\nOrders owners and operators of specific SIAI Marchetti aeroplanes to **replace a faulty nose gear part** (the \"drag brace link\" with part number 205-9-142-03) before a deadline.\n\n**Who it affects:**\n- Owners and operators of **SIAI Marchetti S205-18/R, S205-20/R, and S205-22/R aircraft**\n- Only those with **serial numbers 106 to 239**\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions. If you don't comply, you cannot legally fly the aircraft. This particular AD addresses a specific mechanical defect in the nose landing gear that could affect flight safety.\n\n**Key details:**\n- **Compliance deadline:** Before 31 March 1971\n- **Technical reference:** SIAI Marchetti Service Bulletin 205B12 (the manufacturer's official repair notice)\n- **Document identifier:** AD/SM-205/6"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"There is no indication in the provided text that the directive’s scope was altered from its original formulation. The AD specifies the affected models and serial numbers (Applicability), points to SIAI Marchetti SB 205B12 for the replacement procedure (Document), and sets a fixed compliance deadline (Compliance: Before 31 March 1971). These elements define a narrow, unchanged scope."},"complexity_factors":["Narrow applicability: limited to three specific models and a serial-number range (Applicability).","Single, clearly specified action: replacement of one part number (title and Document reference).","Fixed compliance deadline reduces scheduling ambiguity (Compliance: Before 31 March 1971).","Procedural detail is outsourced to an external service bulletin (SIAI Marchetti SB 205B12), requiring operators to consult that document for technical steps (Document).","Historical date and short text: limited normative content within the AD itself, with reliance on the service bulletin for the how-to."],"plain_english_summary":"The directive mandates replacement of the nose‑gear drag brace link (P/N 205‑9‑142‑03) on SIAI Marchetti S205‑18/R, S205‑20/R and S205‑22/R aircraft serial numbers 106–239, performed per SIAI Marchetti SB 205B12 and completed before 31 March 1971.  \n\nIt’s an airworthiness requirement that affects owners/operators (who bear parts and maintenance costs and must schedule the work) and ensures continued safe operation of the listed aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-205-6-nose-gear-drag-brace-link-p-n-205-9-142-03-replacement","history":"/api/acts/ad-sm-205-6-nose-gear-drag-brace-link-p-n-205-9-142-03-replacement/history","analysis":"/api/acts/ad-sm-205-6-nose-gear-drag-brace-link-p-n-205-9-142-03-replacement/analysis","conflicts":"/api/acts/ad-sm-205-6-nose-gear-drag-brace-link-p-n-205-9-142-03-replacement/conflicts","importantCases":"/api/acts/ad-sm-205-6-nose-gear-drag-brace-link-p-n-205-9-142-03-replacement/important-cases","documents":"/api/acts/ad-sm-205-6-nose-gear-drag-brace-link-p-n-205-9-142-03-replacement/documents"}}