{"id":"F2006B08679","name":"AD/CT58/4 - Compressor Stator Vanes","slug":"ad-ct58-4-compressor-stator-vanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51799,"registerId":"commonwealth-F2006B08679-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CT58/4 - Compressor Stator Vanes","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 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  General Electric Turbine Engines - CT58 Series\n\n \n\nAD/CT58/4 Compressor Stator Vanes 9/85\n\nApplicability: All CT58-100-1 and CT58-110-1 as detailed in General Electric SB (CT 58) 72-108 (CEB No. 180).\n\n \n\nDocument: General Electric SB (CT 58) 72-108 (CEB No. 180); or AD/GE-T/8.\n\nCompliance: Before installation in an aircraft following next complete overhaul after 8 March 1968.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2392},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted technical directive addressing a specific component (compressor stator vanes) in specific engine models. It remains narrowly focused on its original aviation safety purpose with no evidence of scope creep."},"complexity_factors":["Conditional compliance trigger based on overhaul date (8 March 1968) rather than directive date","Requires cross-referencing to external technical document (General Electric Service Bulletin 72-108) for actual implementation steps","Alternative compliance path via reference to another airworthiness directive (AD/GE-T/8)"],"plain_english_summary":"This mandatory Civil Aviation Safety Authority airworthiness directive requires maintenance organisations to inspect or modify compressor stator vanes on General Electric CT58-100-1 and CT58-110-1 turbine engines before those engines can be installed following a complete service overhaul performed after 8 March 1968.  \n\nCompliance must follow General Electric Service Bulletin (CT 58) 72-108 or the alternative directive AD/GE-T/8 to prevent vane-related engine failures and maintain flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ct58-4-compressor-stator-vanes","history":"/api/acts/ad-ct58-4-compressor-stator-vanes/history","analysis":"/api/acts/ad-ct58-4-compressor-stator-vanes/analysis","conflicts":"/api/acts/ad-ct58-4-compressor-stator-vanes/conflicts","importantCases":"/api/acts/ad-ct58-4-compressor-stator-vanes/important-cases","documents":"/api/acts/ad-ct58-4-compressor-stator-vanes/documents"}}