{"id":"F2006B08499","name":"AD/CF700/10 - Turbine Section","slug":"ad-cf700-10-turbine-section","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51206,"registerId":"commonwealth-F2006B08499-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CF700/10 - Turbine Section","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 - CF700 Series\n\n \n\nAD/CF700/10 Turbine Section 9/85\n\nApplicability: CF700-2C fitted with P/N 5005T66G06 turbine stator assemblies. CF700-2D and - 2D-2 fitted with P/N 5013T23G01 turbine stator assemblies.\n\n \n\nDocument: General Electric SB (CF700) 72-107; or\n\n \n\nAD/GE-T/23.\n\n \n\nCompliance: In accordance with the requirement document.\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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The supplied AD text sets a defined scope: it applies to the listed CF700 models fitted with the specified turbine stator assembly part numbers and requires compliance with the named requirement document. The text provides no indication that this scope has been altered from an earlier intent; the AD limits its legal effect to those engines and directs operators to the external document for the required actions (see \"Applicability\" and \"Document\"/\"Compliance\")."},"complexity_factors":["Reference to external technical documents for all required actions (General Electric SB (CF700) 72-107; AD/GE-T/23) increases complexity because compliance details are not in the AD itself.","Applicability is precise (specific engine models and part numbers), which reduces ambiguity but requires accurate parts/serial checking.","Lack of operational detail in the AD text (no inspection steps, intervals, or cost estimates) forces practitioners to consult and interpret technical documents.","Regulatory provenance is clear (CASA schedule of airworthiness directives), reducing legal uncertainty about who issues the requirement."],"plain_english_summary":"What this instrument does, in practical terms:\n\n- It is an airworthiness directive issued under the Civil Aviation Regulations schedule of airworthiness directives. The directive applies to specified General Electric CF700 turbine engines and requires compliance with a referenced technical document. (See header and \"Applicability\" and \"Compliance\" below.)\n\n- Applicability: The AD applies to CF700-2C engines fitted with turbine stator assemblies P/N 5005T66G06, and to CF700-2D and CF700-2D-2 engines fitted with turbine stator assemblies P/N 5013T23G01. (\"Applicability: CF700-2C fitted with P/N 5005T66G06 turbine stator assemblies. CF700-2D and -2D-2 fitted with P/N 5013T23G01 turbine stator assemblies.\")\n\n- Required action: The AD directs affected operators to comply with the specified requirement document. The directive names the requirement document as General Electric SB (CF700) 72-107 or AD/GE-T/23 and states: \"Compliance: In accordance with the requirement document.\" (\"Document: General Electric SB (CF700) 72-107; or AD/GE-T/23.\" and \"Compliance: In accordance with the requirement document.\")\n\nWho this affects and who decides:\n\n- The named regulated parties are aircraft/engine operators and maintenance organisations responsible for CF700 engines that match the listed part numbers; those operators must follow the actions set out in the referenced requirement document. (See \"Applicability\" and \"Compliance\".)\n\n- The issuing authority is the Civil Aviation Safety Authority under the Commonwealth Civil Aviation Regulations schedule of airworthiness directives, which identifies this AD in the Schedule. (Header: \"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES\".)\n\nWhy it matters and how to read the instruction practically:\n\n- Mechanically, the AD does not itself list inspection or repair steps; it mandates that operators perform whatever actions the referenced General Electric service bulletin or the alternate AD requires. The specific technical steps, intervals, and any parts or labour requirements are contained in the named documents (General Electric SB (CF700) 72-107 or AD/GE-T/23). (\"Document: ...\" and \"Compliance: In accordance with the requirement document.\")\n\n- Because the directive ties legal compliance to an external technical document, the cost, time, and operational impact are determined by that document: for example, whether it mandates inspection only, parts replacement, or engine/shop visits. The AD text itself does not set those operational details or costs. (Compare \"Applicability\" with \"Compliance\".)\n\nCosts, incentives and trade-offs (as stated or implied by the source):\n\n- Who pays: The operator or the entity that maintains the affected engines will carry the direct costs of complying with the requirement document (labour, downtime, parts, shop visits). The AD text does not allocate costs elsewhere. (See \"Applicability\" and \"Compliance\".)\n\n- Incentives and behaviour: The AD creates a legal obligation to follow the referenced technical instruction for the listed engines/part numbers. Operators will need to consult the referenced document to determine required inspections or corrective actions and schedule maintenance accordingly. (\"Compliance: In accordance with the requirement document.\")\n\n- Trade-offs and opportunity cost: Because the AD points to an external document for the required actions, operators must divert resources (maintenance capacity, calendar time, budget) to meet those actions rather than to other tasks; the AD text does not quantify these costs. (See \"Compliance\" and the absence of detail in this AD.)\n\nImplementation risk and discretion:\n\n- The AD delegates the specific remedial and compliance steps to the referenced service bulletin or alternate AD. That creates dependence on the clarity and completeness of those documents; this AD does not set tolerances, intervals, or corrective methods itself. (\"Document: ...\" and \"Compliance: In accordance with the requirement document.\")\n\n- Regulatory discretion is visible in the selection of models and part numbers listed in the \"Applicability\" clause; the AD’s legal effect attaches only to engines that match those descriptions. (\"Applicability: ... P/N 5005T66G06 ... P/N 5013T23G01.\")\n\nLimitations of the supplied text:\n\n- The AD text supplied here does not include the specific inspection/repair actions, the safety rationale, the intervals, or the cost estimates. Those details are in the referenced General Electric service bulletin or the alternate AD named in the document. (See \"Document\" and \"Compliance\".)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific technical issue with specific engine configurations. It has not expanded beyond its original purpose of ensuring airworthiness of the identified turbine stator assemblies."},"complexity_factors":["Extremely short document (approximately 150 words)","Only 2 defined part numbers specifying applicability","No nested exceptions or conditional logic","Single compliance pathway (follow the referenced document)","No cross-references to other legislation beyond the parent regulations (Civil Aviation Regulations 1998, Part 39)","Straightforward applicability criteria based on engine model and part number"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires specific maintenance or inspection actions on certain **General Electric CF700 series turbine engines** to address a safety issue in the **turbine section** (the part of the engine that extracts energy from hot gases to produce thrust).\n\n**Who it affects:**\n- **Aircraft operators** using CF700-2C engines fitted with part number (P/N) 5005T66G06 turbine stator assemblies\n- **Aircraft operators** using CF700-2D or CF700-2D-2 engines fitted with P/N 5013T23G01 turbine stator assemblies\n\n(A **turbine stator assembly** is a stationary component that helps direct airflow onto the rotating turbine blades — if it fails, it can cause catastrophic engine damage.)\n\n**What must be done:** Operators must follow the instructions in either:\n- **General Electric Service Bulletin (SB) CF700-72-107**, or\n- **Airworthiness Directive AD/GE-T/23**\n\n(A **Service Bulletin** is a manufacturer's technical notice describing modifications or inspections; an **Airworthiness Directive** is a legally enforceable safety order.)\n\n**Why it matters:** This AD ensures that potentially defective turbine stator assemblies are identified and addressed before they can fail in flight. Non-compliance grounds the aircraft — it cannot legally fly until the work is done."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cf700-10-turbine-section","history":"/api/acts/ad-cf700-10-turbine-section/history","analysis":"/api/acts/ad-cf700-10-turbine-section/analysis","conflicts":"/api/acts/ad-cf700-10-turbine-section/conflicts","importantCases":"/api/acts/ad-cf700-10-turbine-section/important-cases","documents":"/api/acts/ad-cf700-10-turbine-section/documents"}}