{"id":"F2006B09370","name":"AD/ECUREUIL/64 - Engine Oil Pipe","slug":"ad-ecureuil-64-engine-oil-pipe","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53651,"registerId":"commonwealth-F2006B09370-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.","sortOrder":0},{"sectionNumber":"AD/ECUREUIL/64 Engine Oil Pipe 9/2000","sectionType":"part","heading":"AD/ECUREUIL/64 Engine Oil Pipe 9/2000","content":"# AD/ECUREUIL/64 Engine Oil Pipe 9/2000\n\nApplicability: AS 350 B, B1, B2, BA, BB and D series helicopters on which MOD 07 2793 has not been accomplished.\n\nRequirement: Install a heat resistant silicone sheath on the engine oil tank breather pipe in accordance with Eurocopter AS 350 Service Bulletin No 79.00.11 Revision 1.\n\nNote: DGAC AD 2000-268-078(A) refers.\n\nCompliance: Unless previously accomplished, prior to 1 January 2001.\n\nThis Airworthiness Directive becomes effective on 7 September 2000.\n\nBackground: This Directive is raised to ensure the engine oil tank breather pipe is fitted with a fire resistant sheath.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.003.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 31 July 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 9 August 2000.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive targeting a specific mechanical defect in specific helicopter models. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 3 operative sections: Applicability, Requirement, and Compliance","Single, unambiguous action required (install a sheath)","Clear deadline (prior to 1 January 2001)","No nested conditions or exceptions","Only one defined reference (MOD 07 2793) which is clearly identified as an exclusion","No cross-references to other legislation beyond a note about a French aviation directive"],"plain_english_summary":"This is a **safety order for helicopters** issued by Australia's aviation safety regulator (CASA). It applies to specific models of Eurocopter AS 350 helicopters (also known as Ecureuil or 'Squirrel' helicopters) that haven't had a particular modification done.\n\n**What it requires:**\n- Owners/operators must fit a **heat-resistant silicone sleeve** around the engine oil tank breather pipe\n- This must be done following the manufacturer's instructions (Eurocopter Service Bulletin 79.00.11)\n- The deadline is **before 1 January 2001**\n\n**Why it matters:**\nThe breather pipe without protection could be a **fire hazard**. The sheath acts as a fire barrier to prevent engine oil from igniting if there's a fire in the engine compartment. This is a proactive safety fix to prevent catastrophic engine fires.\n\n**Who needs to act:**\nAnyone operating AS 350 B, B1, B2, BA, BB, or D series helicopters that haven't already had modification 07 2793 installed."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD sets a targeted retrofit requirement rather than expanding or narrowing the pool of affected aircraft beyond those without MOD 07 2793. It mandates installation per the Eurocopter service bulletin and a fixed compliance date (Applicability, Requirement, Compliance)."},"complexity_factors":["Narrow technical retrofit: specific component (engine oil tank breather pipe) and specific modification (heat‑resistant silicone sheath) — (Requirement).","Limited applicability to defined AS350 subseries and only where MOD 07 2793 has not been accomplished — (Applicability).","Single, short compliance window (must be done before 1 January 2001 unless already done) — (Compliance).","Dependence on an external manufacturer's instruction (Eurocopter AS 350 Service Bulletin No 79.00.11 Rev 1) for the work to be performed — (Requirement).","Safety‑critical context increases urgency but does not create ongoing reporting or complex administrative processes — (Background/Requirement)."],"plain_english_summary":"Requires owners/operators of specified Eurocopter AS350 B, B1, B2, BA, BB and D helicopters that have not completed MOD 07 2793 to install a heat‑resistant silicone sheath on the engine oil tank breather pipe per Eurocopter Service Bulletin No 79.00.11 Rev 1, to be done before 1 January 2001. The stated purpose is to fit a fire‑resistant sheath to reduce fire risk; owners/operators pay installation costs and must schedule the work to meet the deadline."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-64-engine-oil-pipe","history":"/api/acts/ad-ecureuil-64-engine-oil-pipe/history","analysis":"/api/acts/ad-ecureuil-64-engine-oil-pipe/analysis","conflicts":"/api/acts/ad-ecureuil-64-engine-oil-pipe/conflicts","importantCases":"/api/acts/ad-ecureuil-64-engine-oil-pipe/important-cases","documents":"/api/acts/ad-ecureuil-64-engine-oil-pipe/documents"}}