{"id":"F2006B05243","name":"AD/CESSNA 206/38 - Retirement Lives - Fatigue Critical Components","slug":"ad-cessna-206-38-retirement-lives-fatigue-critical-components","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45551,"registerId":"commonwealth-F2006B05243-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 206/38 - Retirement Lives - Fatigue Critical Components","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)  Cessna 206 Series Aeroplanes\n\n \n\nAD/CESSNA 206/38 Retirement Lives - Fatigue Critical Components\n\n\n6/85\n\n \n\nApplicability: All model U206G and TU206G which have been modified in accordance with US FAA STC SA2353NM (Soloy Turbine Conversion).\n\n \n\nRequirement: Action in accordance with Soloy Turbine Pac Maintenance and Overhaul Manual, Revision No. 2 dated 1 August 1984.\n\n \n\nCompliance: All life limited components listed in Table I-8 of the Requirement document shall be retired from service before exceeding the lives quoted.\n\n \n\nBackground: The components listed have been assessed as critical to flight safety. Operation beyond their published retirement lives may increase the risk of failure.\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 standard, narrow Airworthiness Directive focused on a specific safety issue (fatigue life limits) for a specific aircraft modification. It has not expanded beyond its original purpose of ensuring safe operation of Soloy-converted Cessna 206 aircraft."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 2 defined applicability criteria (aircraft model and specific STC modification)","Single compliance requirement referencing an external manual","No nested exceptions or conditional logic","No cross-references to other legislation beyond the Civil Aviation Regulations 1998 header","Straightforward command structure: identify aircraft → follow manual → retire parts on time"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\n- Requires owners and operators of certain Cessna 206 aeroplanes (specifically models U206G and TU206G) that have been modified with a particular turbine engine conversion (Soloy Turbine Conversion) to retire specific aircraft parts before they reach a set number of flight hours or cycles.\n\n**Who it affects:**\n- Owners and operators of Cessna U206G and TU206G aircraft that have undergone the Soloy Turbine Conversion (approved under US FAA STC SA2353NM).\n- Maintenance organisations servicing these aircraft.\n\n**Why it matters:**\n- The listed components are \"fatigue critical\" — meaning they wear out from repeated stress during flight and could fail catastrophically if used too long.\n- The directive prevents accidents by forcing replacement of these parts before they become dangerous.\n- Non-compliance means the aircraft cannot legally fly in Australia.\n\n**Key requirement:**\n- Follow the Soloy Turbine Pac Maintenance and Overhaul Manual (Revision 2, dated 1 August 1984), specifically Table I-8, which lists the maximum allowed life for each component."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The supplied text does not indicate any change to scope from an earlier instrument. It sets a targeted scope (U206G and TU206G modified by STC SA2353NM) and prescribes retirement of life-limited components per the Soloy manual and Table I-8. No amendment or expansion of applicability is shown in the document."},"complexity_factors":["Narrow applicability: only U206G and TU206G aircraft modified under STC SA2353NM are affected (\"Applicability\").","External-document dependence: mandatory actions and the list of life-limited parts are defined in an external maintenance manual (Soloy Turbine Pac Maintenance and Overhaul Manual, Rev. 2, 1 Aug 1984) and Table I-8 rather than in the AD text itself (\"Requirement\").","Mandatory retirement timing: the AD uses mandatory language (\"shall be retired from service\"), leaving little operational discretion but requiring accurate life tracking (\"Compliance\").","Record-keeping and administrative burden: compliance requires tracking life-limited components against Table I-8, accessing the specified manual, and scheduling replacements (\"Requirement\" and \"Compliance\").","Potential supply and operational risk: retirement may create parts-supply or downtime risks if replacement items are scarce; the AD does not address mitigation (implied by \"Requirement\" and \"Compliance\").","Antiquity of referenced manual: the manual dated 1 August 1984 may complicate interpretation if later practices or parts changes exist (\"Requirement\")."],"plain_english_summary":"This AD requires owners/operators of U206G and TU206G Cessna 206s modified under Soloy STC SA2353NM to retire life‑limited components listed in Table I‑8 of the Soloy Turbine Pac Maintenance & Overhaul Manual (Rev.2, 1 Aug 1984) at the published lives and follow that manual’s procedures.  \n\nIt tightens safety by preventing operation beyond assessed retirement lives, while shifting replacement, downtime and administrative costs to the affected operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-206-38-retirement-lives-fatigue-critical-components","history":"/api/acts/ad-cessna-206-38-retirement-lives-fatigue-critical-components/history","analysis":"/api/acts/ad-cessna-206-38-retirement-lives-fatigue-critical-components/analysis","conflicts":"/api/acts/ad-cessna-206-38-retirement-lives-fatigue-critical-components/conflicts","importantCases":"/api/acts/ad-cessna-206-38-retirement-lives-fatigue-critical-components/important-cases","documents":"/api/acts/ad-cessna-206-38-retirement-lives-fatigue-critical-components/documents"}}