{"id":"F2006B08570","name":"AD/CJ610/6 - Stage 2 Turbine Wheels","slug":"ad-cj610-6-stage-2-turbine-wheels","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51409,"registerId":"commonwealth-F2006B08570-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CJ610/6 - Stage 2 Turbine Wheels","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 - CJ610 Series\n\n \n\nAD/CJ610/6 Stage 2 Turbine Wheels 9/85\n\nApplicability: CJ610-1, -4, -5, -6 engines fitted with P/N 646C596P2 turbine wheels having S/Nos. as listed in requirement document.\n\n \n\nDocument: General Electric SB (CJ610) 72-143; or\n\n \n\nAD/GE-T/42\n\n \n\nCompliance: Forthwith.\n\n \n\nBackground: A small number of stage 2 wheels may have imperfect contours in the forward rabbet radius that could limit the life of the wheel. This Directive is issued to ensure such wheels are removed from service.\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":1475},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"Narrow, targeted safety directive focused exclusively on removing defective turbine wheels from specific engine models due to identified manufacturing flaws. Scope remains strictly limited to the original safety-critical defect."},"complexity_factors":["Single unambiguous mandatory action","No conditional logic or nested exceptions","Limited applicability defined by specific part and serial numbers","Minimal cross-referencing (only two external technical documents)","Extremely short text with no interpretative sections"],"plain_english_summary":"**What this is:** An urgent safety order issued by the Civil Aviation Safety Authority (CASA) under aviation regulations.\n\n**What it does:** Requires immediate removal from service of specific Stage 2 turbine wheels in General Electric CJ610 jet engines. The affected wheels (part number 646C596P2 with specific serial numbers listed in the referenced technical document) have a manufacturing defect in the \"forward rabbet radius\" (a curved groove at the front of the wheel) that could cause premature failure.\n\n**Who it affects:** Aircraft owners and operators using CJ610-1, -4, -5, or -6 model engines fitted with the specified turbine wheels.\n\n**What you must do:** Comply \"forthwith\" (immediately) by removing the affected wheels from service in accordance with General Electric Service Bulletin CJ610-72-143 or Airworthiness Directive AD/GE-T/42.\n\n**Why it matters:** The imperfect contour in the wheel could limit its operational life, potentially leading to catastrophic engine failure and endangering flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cj610-6-stage-2-turbine-wheels","history":"/api/acts/ad-cj610-6-stage-2-turbine-wheels/history","analysis":"/api/acts/ad-cj610-6-stage-2-turbine-wheels/analysis","conflicts":"/api/acts/ad-cj610-6-stage-2-turbine-wheels/conflicts","importantCases":"/api/acts/ad-cj610-6-stage-2-turbine-wheels/important-cases","documents":"/api/acts/ad-cj610-6-stage-2-turbine-wheels/documents"}}