{"id":"F2006B07037","name":"AD/SM-205/15 - Fuselage Frame - Front Spar Attachment - Inspection and Modification","slug":"ad-sm-205-15-fuselage-frame-front-spar-attachment-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48748,"registerId":"commonwealth-F2006B07037-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-205/15 - Fuselage Frame - Front Spar Attachment - 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-205/15  Fuselage Frame - Front Spar Attachment - Inspection and Modification\n\nApplicability: All models.\n\n \n\nDocument: SIAI Marchetti SB 205B28. Compliance: 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\n9/71\n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"Based solely on the text supplied, the AD’s scope is stated as applying to all models of the SIAI Marchetti S205/S208 series and requires inspection and modification of the fuselage frame front spar attachment by reference to SIAI Marchetti SB 205B28. There is no indication in this document that the scope has been altered from its original formulation; the AD continues to delegate technical detail and compliance timing to the referenced service bulletin."},"complexity_factors":["Direct reference to an external technical document (SIAI Marchetti SB 205B28) for all procedural and timing details rather than including them in the AD text.","Applicability to 'All models' of the S205/S208 series increases operational scope and potential fleet-wide coordination costs.","Regulatory enforcement via Part 39 requires formal record-keeping and possible interaction with CASA for any alternative compliance or extension requests.","Practical compliance requires specialised maintenance skills, possible replacement parts or modification kits, and aircraft downtime scheduling.","Lack of quantified cost, interval, or method details in the AD text forces operators to obtain and interpret the service bulletin, creating information-dependence and potential supply-chain uncertainty."],"plain_english_summary":"This Airworthiness Directive mandates inspections and a modification to the fuselage frame front spar attachment on all SIAI Marchetti S205/S208 aircraft, making compliance a legal airworthiness requirement. It delegates technical steps, intervals and compliance times to SIAI Marchetti Service Bulletin SB 205B28. Owners/operators must arrange and pay for the work; maintenance organisations supply and perform it. The AD matters because non‑compliance affects aircraft legality and addressed structural safety."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive focused on a specific airframe structural issue. It has not expanded beyond its original purpose of addressing the front spar attachment safety concern. The scope remains precisely targeted at the identified defect in the specified aircraft series."},"complexity_factors":["Extremely short document (approximately 150 words)","No defined terms section — relies entirely on external reference to manufacturer service bulletin SB 205B28","No conditional logic or nested exceptions within the directive text itself","Simple binary applicability: 'All models'","Single compliance requirement: 'As detailed in the requirement document'","Cross-reference is straightforward (one external document)","No penalty provisions, appeal mechanisms, or procedural subsections contained in this excerpt"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) that mandates safety actions for specific Italian-made aircraft.\n\n**What it does:**\n- Requires owners and operators of **SIAI Marchetti S205 and S208 series aeroplanes** to inspect and potentially modify a critical structural component — specifically the **fuselage frame where the front wing spar attaches**.\n- The directive references a manufacturer service bulletin (SB 205B28) that contains the detailed technical instructions.\n\n**Who it affects:**\n- Anyone who owns, operates, or maintains these particular aircraft models in Australia.\n- Applies to **all models** in the S205 and S208 series — no exceptions.\n\n**Why it matters:**\n- The front spar attachment is a **primary structural element** that connects the wing to the fuselage. If this fails, the wing could separate from the aircraft in flight.\n- This AD likely addresses a discovered defect, fatigue crack, or design weakness that could lead to catastrophic failure if not corrected.\n- Compliance is **legally mandatory** — aircraft cannot legally fly until the required inspection and any necessary modifications are completed according to the manufacturer's specifications.\n\n**Key point:** This isn't optional maintenance advice. It's a compulsory safety order backed by aviation law. The actual technical work is described in the referenced service bulletin, not in this short directive itself."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-205-15-fuselage-frame-front-spar-attachment-inspection-and-modification","history":"/api/acts/ad-sm-205-15-fuselage-frame-front-spar-attachment-inspection-and-modification/history","analysis":"/api/acts/ad-sm-205-15-fuselage-frame-front-spar-attachment-inspection-and-modification/analysis","conflicts":"/api/acts/ad-sm-205-15-fuselage-frame-front-spar-attachment-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-sm-205-15-fuselage-frame-front-spar-attachment-inspection-and-modification/important-cases","documents":"/api/acts/ad-sm-205-15-fuselage-frame-front-spar-attachment-inspection-and-modification/documents"}}