{"id":"F2006B07040","name":"AD/SM-205/18 - Nose Landing Gear Brace and Attachments - Inspection and Modification","slug":"ad-sm-205-18-nose-landing-gear-brace-and-attachments-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48756,"registerId":"commonwealth-F2006B07040-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-205/18 - Nose Landing Gear Brace and Attachments - Inspection and Modification","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-205/18  Nose Landing Gear Brace and Attachments - Inspection and Modification\n\nApplicability: All models.\n\n \n\nDocument: SIAI Marchetti SB 205B33.\n\n \n\nCompliance: As detailed in the Requirement Document.\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\n4/72\n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The supplied text does not show any amendment to or change from an earlier instrument. It sets a requirement applying to all SIAI Marchetti S205 and S208 models and refers readers to an external Requirement Document and the manufacturer service bulletin SIAI Marchetti SB 205B33 for technical detail (\"Applicability: All models\"; \"Document: SIAI Marchetti SB 205B33\"; \"Compliance: As detailed in the Requirement Document\"). No information in the provided text indicates a change from an original intent or prior scope."},"complexity_factors":["Reference to external Requirement Document for all compliance details (\"Compliance: As detailed in the Requirement Document\") — increases implementation complexity because the AD does not contain technical steps or timelines.","Reference to manufacturer service bulletin SIAI Marchetti SB 205B33 (\"Document: SIAI Marchetti SB 205B33\") — requires operators to obtain and apply technical material external to the AD.","Broad applicability to all S205 and S208 models (\"Applicability: All models\") — increases the number of affected operators and fleet-wide coordination needs.","Regulatory enforcement under Part 39 (header) — creates legal obligation and potential enforcement actions, though the AD text supplied does not detail enforcement mechanics or alternative compliance routes.","Limited information in the supplied text — the AD’s brief form here leaves substantive technical and scheduling questions to other documents, which raises practical compliance uncertainty until those documents are consulted."],"plain_english_summary":"This Airworthiness Directive mandates inspection and modification of the nose landing gear brace and attachments for SIAI Marchetti S205 and S208 series aeroplanes. The exact work and timing are set out in a Requirement Document and SIAI Marchetti SB 205B33.\n\nOwners and operators of those types must comply under CASA’s Part 39 authority, turning the manufacturer guidance into a legally enforceable obligation that may entail labour, parts and downtime costs."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive targeting a specific mechanical defect in specific aircraft models. It has not expanded beyond its original safety purpose."},"complexity_factors":["Extremely short document (effectively 4 substantive lines)","No defined terms section — relies entirely on external manufacturer document (SB 205B33)","No conditional logic or exceptions within the instrument itself","Single cross-reference only (to the Service Bulletin)","Standardised AD format with minimal variation"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA).\n\n**What it does:**\n- Requires owners and operators of **SIAI Marchetti S205 and S208 series aircraft** to inspect and potentially modify the **nose landing gear brace and its attachments**.\n- The specific technical requirements are found in **Service Bulletin 205B33** issued by the manufacturer (SIAI Marchetti).\n\n**Who it affects:**\n- Anyone who owns, operates, or maintains these specific Italian-made light aircraft in Australia.\n\n**Why it matters:**\n- Landing gear failures can be catastrophic. This directive addresses a known safety issue with the nose landing gear structure, ensuring aircraft don't suffer structural failures during takeoff, landing, or ground operations.\n- Compliance is **mandatory** — you cannot legally fly the aircraft until the work is done as specified."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-205-18-nose-landing-gear-brace-and-attachments-inspection-and-modification","history":"/api/acts/ad-sm-205-18-nose-landing-gear-brace-and-attachments-inspection-and-modification/history","analysis":"/api/acts/ad-sm-205-18-nose-landing-gear-brace-and-attachments-inspection-and-modification/analysis","conflicts":"/api/acts/ad-sm-205-18-nose-landing-gear-brace-and-attachments-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-sm-205-18-nose-landing-gear-brace-and-attachments-inspection-and-modification/important-cases","documents":"/api/acts/ad-sm-205-18-nose-landing-gear-brace-and-attachments-inspection-and-modification/documents"}}