{"id":"F2006B07036","name":"AD/SM-205/14 - Fire Protection - Modification","slug":"ad-sm-205-14-fire-protection-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48746,"registerId":"commonwealth-F2006B07036-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-205/14 - Fire Protection - 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-205/14 Fire Protection - Modification 5/71\n\nApplicability: All S205 series with S/Nos. 001 to 4-120, 4-124 and 4-125 except 003, 238, 351, 376,\n\n383, 397, 3-100, 4-106, 4-115 and 4-116.\n\n \n\nDocument: SIAI Marchetti SB 205B19.\n\n \n\nCompliance: 100 hours time in service after 31 May 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","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-purpose airworthiness directive focused on one specific safety modification for one aircraft type. It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Very short document (approximately 150 words)","Only 3 substantive provisions: applicability, reference document, and compliance deadline","Simple conditional logic (applies to specific serial numbers with explicit exceptions)","No defined terms section","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","Single compliance requirement with clear time-based trigger"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific **SIAI Marchetti S205 series aircraft** to carry out a fire protection modification.\n\n**What it does:**\n- Mandates a specific safety modification to improve fire protection systems on these Italian-made aircraft\n- Requires compliance with Service Bulletin 205B19 (a manufacturer's technical instruction)\n\n**Who it affects:**\n- Owners and operators of S205 series aircraft with serial numbers 001 to 4-120, plus 4-124 and 4-125\n- **Excludes** specific serial numbers: 003, 238, 351, 376, 383, 397, 3-100, 4-106, 4-115, and 4-116\n\n**Why it matters:**\nFire protection is critical in aviation — this directive addresses a known safety risk that could endanger crew and passengers if left unaddressed. The modification must be completed within **100 hours of flight time** after 31 May 1971.\n\n**Key point:** This is a **historical directive** — the compliance deadline was 1971, so this document is now of archival interest for aircraft maintenance records and historical airworthiness compliance."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The text sets a specific, limited scope: a fire-protection modification applying only to listed S205-series serial numbers, referencing SB 205B19, with a fixed compliance window (100 hours TIS after 31 May 1971). The instrument itself does not indicate any amendment, extension or change to that scope within the provided text."},"complexity_factors":["Narrow, specific applicability defined by serial numbers (Applicability)","Mandatory compliance tied to a single, short compliance window (100 hours TIS after 31 May 1971) (Compliance)","Dependence on an external technical document (SIAI Marchetti SB 205B19) for the actual modification steps (Document)","Minimal textual detail in the AD itself — technical and cost details are offloaded to the referenced SB (Document)","Legal framework reference to Part 39 / Airworthiness Directives, requiring regulatory compliance though the AD text is concise (heading)"],"plain_english_summary":"What this instrument does (mechanically)\n\n- This is an Airworthiness Directive titled \"AD/SM-205/14 Fire Protection - Modification\" issued under the Civil Aviation Regulations, Part 39 (Schedule of Airworthiness Directives). (title and heading)\n- It requires a modification related to fire protection on specific SIAI Marchetti S205 series aeroplanes. (title: \"Fire Protection - Modification\")\n- It identifies exactly which aeroplanes are affected by serial number: all S205 series with S/Nos. 001 to 4-120, 4-124 and 4-125, with an explicit list of serial numbers that are excluded. (Applicability)\n- It mandates that the modification be carried out in accordance with SIAI Marchetti Service Bulletin SB 205B19. (Document)\n- The required compliance time is within 100 hours time in service after 31 May 1971. (Compliance)\n\nWho is affected and who decides\n\n- The legal obligation falls on the operators/owners of the listed S205-series aircraft — they must ensure the modification is completed for each affected airframe. (Applicability; Compliance)\n- The Civil Aviation Safety Authority (through the Airworthiness Directive mechanism under Part 39) is the issuing authority that imposes the mandatory requirement. (heading: Civil Aviation Regulations 1998, PART 39)\n- The technical steps for the required work are contained in the referenced manufacturer service bulletin, SB 205B19; the AD points to that document as the source of the modification instructions. (Document)\n\nCosts, incentives and compliance burden (mechanical effects)\n\n- Direct cost and operational burden: owners/operators pay for parts, labour and required downtime to carry out the modification specified in SB 205B19. The AD itself does not state cost amounts. (Document; Compliance)\n- Timing constraint: the AD sets a fixed compliance window (100 hours TIS after 31 May 1971), which imposes a scheduling requirement on operators to plan and effect the work within that window. (Compliance)\n- Scope limitation: only aircraft with the listed serial numbers are subject to the requirement; aircraft explicitly excluded by serial number are not covered. That distinction determines who pays and who is not required to act. (Applicability)\n- Implementation dependence: the AD relies on the service bulletin for technical detail, so the practical work and any judgement about parts, methods or inspections will follow the SB and ordinary maintenance practices. This creates an implementation reliance on the manufacturer’s instructions. (Document)\n\nTrade-offs, risks and practical notes\n\n- The AD is specific and targeted by serial number; this concentrates the compliance obligation on a defined set of owners/operators rather than across an entire fleet type. (Applicability)\n- Because the AD references an external service bulletin for technical detail, any risk about how to carry out the modification (for example, interpretation of steps or availability of parts) is handled through normal maintenance channels and the SB itself rather than within the AD text. (Document)\n- The AD sets a past compliance date window (after 31 May 1971), indicating the directive was intended to be implemented within a specified historical timeframe; the text contains no additional amendment or extension language. (Compliance)\n\nWhat the AD does not say (in the text provided)\n\n- The AD does not set out cost figures, exact technical steps, or enforcement mechanisms beyond invoking the AD requirement and referring to SB 205B19. (Document; Compliance)\n- The AD text does not state empirical outcomes; it is titled to indicate the subject (fire protection) but does not itself quantify expected safety benefits or impacts on operating cost in monetary terms. (title; Document)\n\nKey source citations within the instrument\n\n- Title and issuing framework: \"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39\" (heading)\n- Applicability: \"All S205 series with S/Nos. 001 to 4-120, 4-124 and 4-125 except 003, 238, 351, 376, 383, 397, 3-100, 4-106, 4-115 and 4-116.\" (Applicability)\n- Technical reference: \"Document: SIAI Marchetti SB 205B19.\" (Document)\n- Compliance timing: \"100 hours time in service after 31 May 1971.\" (Compliance)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-205-14-fire-protection-modification","history":"/api/acts/ad-sm-205-14-fire-protection-modification/history","analysis":"/api/acts/ad-sm-205-14-fire-protection-modification/analysis","conflicts":"/api/acts/ad-sm-205-14-fire-protection-modification/conflicts","importantCases":"/api/acts/ad-sm-205-14-fire-protection-modification/important-cases","documents":"/api/acts/ad-sm-205-14-fire-protection-modification/documents"}}