{"id":"F2006B08511","name":"AD/CF700/7 - Accessory Drive Gearbox Dowel Pin","slug":"ad-cf700-7-accessory-drive-gearbox-dowel-pin","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51239,"registerId":"commonwealth-F2006B08511-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CF700/7 - Accessory Drive Gearbox Dowel Pin","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/CF700/7 Accessory Drive Gearbox Dowel Pin 9/85\n\nApplicability: All CF700-2C, -2D and -2D2 models. Document:  General Electric SB No. (CF700) 72-98; or\n\nAD/GE-T/19.\n\n \n\nCompliance: Within 100 hours time in service after 30 September 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","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, original airworthiness directive with a narrow, specific scope (single component on specific engine models). There is no indication of scope creep as this is a standalone safety directive rather than an evolving legislative instrument."},"complexity_factors":["Single, specific technical requirement (dowel pin inspection/replacement)","No defined terms section — uses standard aviation terminology","Minimal conditional logic — applies to all listed engine models without exceptions","Short document length (approximately 150 words)","Single cross-reference to manufacturer service bulletin and superseded directive","Clear applicability and compliance sections with unambiguous deadlines"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998. It applies to specific **General Electric CF700 series turbine engines** used in aircraft.\n\n**What it does:**\n- Requires inspection or replacement of a **dowel pin** in the **Accessory Drive Gearbox** — a component that transfers power from the engine to accessories like generators and pumps.\n- The directive references a **Service Bulletin (SB No. CF700-72-98)** from General Electric, which contains the technical instructions for the fix.\n\n**Who it affects:**\n- Owners and operators of aircraft equipped with **CF700-2C, CF700-2D, or CF700-2D2** model engines.\n- Maintenance organisations servicing these engines.\n\n**Why it matters:**\n- Dowel pins are critical alignment components. A faulty or worn dowel pin in the gearbox could lead to **mechanical failure**, potentially causing **engine shutdown** or **loss of critical aircraft systems** (electrical, hydraulic) powered by the accessory drive.\n- The compliance deadline (100 hours of flight time after 30 September 1971) indicates this was an urgent safety issue when issued.\n\n**Key compliance requirement:**\n- The work must be completed **within 100 hours of flight time** after 30 September 1971."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The supplied AD text applies to CF700-2C, -2D and -2D2 engines and sets a compliance requirement tied to external documents and a 100-hour deadline. The text does not show any alteration of scope from a prior instrument; no evidence in the supplied text indicates a change in scope from the original intent."},"complexity_factors":["Reference to external technical documents (GE Service Bulletin No. (CF700) 72-98; AD/GE-T/19) — the AD does not state the technical steps, creating dependency on those documents.","Fixed, short compliance deadline expressed as 100 hours time in service after a specific date — creates scheduling constraints for operators and maintenance providers.","Narrow applicability limited to specific engine variants (CF700-2C, -2D, -2D2) — concentrates effect on a small set of operators.","Minimal text in the AD itself — absence of embedded technical detail reduces standalone clarity.","Issued under the Part 39 Schedule of Airworthiness Directives — compliance is regulatory and therefore has legal force and potential enforcement consequences."],"plain_english_summary":"This AD (CASA) requires operators of CF700-2C, -2D and -2D2 engines to carry out the actions specified in GE Service Bulletin No. (CF700) 72‑98 (or AD/GE‑T/19) within 100 hours time‑in‑service after 30 September 1971.  \n\nIt matters because compliance is mandatory, creates scheduling/resource obligations, and requires obtaining the referenced documents for the specific technical steps."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cf700-7-accessory-drive-gearbox-dowel-pin","history":"/api/acts/ad-cf700-7-accessory-drive-gearbox-dowel-pin/history","analysis":"/api/acts/ad-cf700-7-accessory-drive-gearbox-dowel-pin/analysis","conflicts":"/api/acts/ad-cf700-7-accessory-drive-gearbox-dowel-pin/conflicts","importantCases":"/api/acts/ad-cf700-7-accessory-drive-gearbox-dowel-pin/important-cases","documents":"/api/acts/ad-cf700-7-accessory-drive-gearbox-dowel-pin/documents"}}