{"id":"F2006B07054","name":"AD/SM-205/32 - Engine Induction Valve Assembly P/No. 205-5-260-101 or P/No. 205-5-260-01 - Modification","slug":"ad-sm-205-32-engine-induction-valve-assembly-p-no-205-5-260-101-or-p-no-205-5-260-01-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48785,"registerId":"commonwealth-F2006B07054-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-205/32 - Engine Induction Valve Assembly P/No. 205-5-260-101 or P/No. 205-5-260-01 - 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-205/32 Engine Induction Valve Assembly P/No. 205-5-260-\n\n101 or P/No. 205-5-260-01 - Modification\n\n\n5/82\n\n \n\nApplicability: All models S205/20F and S205/20R with S/Nos. referenced in SIAI Marchetti SB No.\n\n205 B55 or with S/Nos. listed in subsequent issues of that SB. Document: 1. SIAI Marchetti SB No. 205B55. or\n\n2. RAI AD 82-10/5205-47.\n\n \n\nCompliance: Unless already accomplished, within 100 hours time in service after 31 May 1982.\n\n \n\nBackground: Breakage or loss of the MS 9048-006 pins securing the butterfly to the valve has been experienced overseas.\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":2,"scope_assessment":{"changed":false,"description":"The directive's scope remains limited to the specified SIAI Marchetti S205/20F and S205/20R aircraft with serial numbers referenced in SIAI Marchetti SB No. 205B55 (and subsequent issues). The instrument imposes a single, time-limited mandatory modification to the specified valve assembly to address reported pin breakages (Applicability; Document; Background; Compliance sections). There is no indication in the text that the directive expands or narrows its original technical focus beyond those aircraft and the referenced documents."},"complexity_factors":["Short, targeted directive with a single mandatory action","Clear, short compliance timeframe (100 hours after 31 May 1982)","Limited applicability tied to specific models and serial numbers","Dependence on external technical documents (SIAI Marchetti SB No. 205B55 or RAI AD 82-10/5205-47) for implementation details","Technical subject-matter (aircraft parts and maintenance) requiring specialist execution though legal text is simple"],"plain_english_summary":"This airworthiness directive requires a modification to the engine induction valve assembly on certain SIAI Marchetti S205/20F and S205/20R aeroplanes to address overseas incidents of MS 9048-006 pin breakage or loss. \n\nOwners/operators must complete the work per the referenced service bulletin or alternative AD within 100 hours time in service after 31 May 1982; costs, downtime and compliance obligations are borne by the operators and enforced by the Civil Aviation Safety Authority."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating a single modification to prevent induction valve failure."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined part numbers (P/No. 205-5-260-101 and P/No. 205-5-260-01)","Single compliance requirement with clear deadline (100 hours TIS after 31 May 1982)","No nested exceptions or conditional logic","Simple binary applicability test (specific serial numbers in referenced SB)","Only 2 external document references (Service Bulletin and Italian AD)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA). It mandates a safety modification for specific SIAI Marchetti aircraft.\n\n**What it does:**\n- Requires owners/operators of certain S205/20F and S205/20R aircraft to modify the **engine induction valve assembly** (a part that controls airflow into the engine).\n- The modification addresses a specific safety risk: **pins securing the butterfly valve can break or fall out**, which could cause engine failure.\n\n**Who it affects:**\n- Owners and operators of SIAI Marchetti S205/20F and S205/20R aircraft with specific serial numbers listed in Service Bulletin 205B55.\n\n**What must be done:**\n- The modification must be completed **within 100 hours of flight time** after 31 May 1982, unless already done.\n- The work must follow the instructions in SIAI Marchetti Service Bulletin No. 205B55 or Italian aviation authority directive AD 82-10/5205-47.\n\n**Why it matters:**\n- Prevents potential engine failure due to mechanical defect. This is a **mandatory safety order** — compliance is legally required, not optional."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-205-32-engine-induction-valve-assembly-p-no-205-5-260-101-or-p-no-205-5-260-01-modification","history":"/api/acts/ad-sm-205-32-engine-induction-valve-assembly-p-no-205-5-260-101-or-p-no-205-5-260-01-modification/history","analysis":"/api/acts/ad-sm-205-32-engine-induction-valve-assembly-p-no-205-5-260-101-or-p-no-205-5-260-01-modification/analysis","conflicts":"/api/acts/ad-sm-205-32-engine-induction-valve-assembly-p-no-205-5-260-101-or-p-no-205-5-260-01-modification/conflicts","importantCases":"/api/acts/ad-sm-205-32-engine-induction-valve-assembly-p-no-205-5-260-101-or-p-no-205-5-260-01-modification/important-cases","documents":"/api/acts/ad-sm-205-32-engine-induction-valve-assembly-p-no-205-5-260-101-or-p-no-205-5-260-01-modification/documents"}}