{"id":"F2006B09283","name":"AD/DHE/8 - Gudgeon Pin - Replacement","slug":"ad-dhe-8-gudgeon-pin-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53335,"registerId":"commonwealth-F2006B09283-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHE/8 - Gudgeon Pin - Replacement","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)  De Havilland Piston Engines\n\n \n\nAD/DHE/8 Gudgeon Pin - Replacement NK\n\nApplicability: Gipsy Queen 70 Series, Mark 1. Document:  1. DH Mod. G2249; or\n\n2. ANO 106.1.7.6.5.11.\n\n \n\nCompliance: Before installation in an aircraft.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3927},"content_quality":"ok","complexity_score":2,"rejection_reason":"","scope_assessment":{"changed":false,"description":"The directive maintains a narrow, technical scope focused solely on a specific engine component (gudgeon pin) for a specific engine model (Gipsy Queen 70 Series Mk 1). There is no evidence of scope creep beyond the original safety purpose."},"complexity_factors":["Extremely brief text (under 100 words) with single compliance action","All technical specifications incorporated by reference to external engineering documents (DH Mod. G2249 or ANO 106.1.7.6.5.11)","No defined terms, interpretation clauses, or conditional exceptions","Single unconditional compliance trigger ('Before installation')"],"plain_english_summary":"**What it is:** An Airworthiness Directive (mandatory safety rule) issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations.\n\n**What it does:** Requires the **replacement of gudgeon pins** (the metal pins connecting pistons to connecting rods) in **De Havilland Gipsy Queen 70 Series Mark 1** aircraft engines.\n\n**Who it affects:** Owners, operators, and maintenance engineers dealing with these specific vintage piston engines (commonly found in older aircraft like the DH Dove).\n\n**Key requirements:**\n*   The replacement must be carried out in accordance with technical specifications in either **De Havilland Modification G2249** or **Airworthiness Notice Order 106.1.7.6.5.11**.\n*   Compliance is mandatory **before the engine is installed** in an aircraft.\n\n**Why it matters:** This is a legally binding safety directive. It is illegal to install or operate an affected engine in an Australian aircraft without completing this gudgeon pin replacement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhe-8-gudgeon-pin-replacement","history":"/api/acts/ad-dhe-8-gudgeon-pin-replacement/history","analysis":"/api/acts/ad-dhe-8-gudgeon-pin-replacement/analysis","conflicts":"/api/acts/ad-dhe-8-gudgeon-pin-replacement/conflicts","importantCases":"/api/acts/ad-dhe-8-gudgeon-pin-replacement/important-cases","documents":"/api/acts/ad-dhe-8-gudgeon-pin-replacement/documents"}}