{"id":"F2006B08753","name":"AD/DAUPHIN/42 - Fuel Filter Elements","slug":"ad-dauphin-42-fuel-filter-elements","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52019,"registerId":"commonwealth-F2006B08753-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DAUPHIN/42 - Fuel Filter Elements","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 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters\n\n \n\nAD/DAUPHIN/42 Fuel Filter Elements 11/94\n\nApplicability: All model SA 365 C, C1, C2, C3, and AS 365 N, N1 and N2 helicopters. Requirement:               Action in accordance with Eurocopter AS 365 C mandatory SB No 28-04 or\n\nEurocopter SA 365 N mandatory SB No 28-22, as applicable.\n\n \n\nNote: DGAC AD 94-149-038(B) refers to C series helicopters while DGAC AD 94- 148-037(B) refers to N series helicopters.\n\n \n\nCompliance: Within 100 hours time in service from 13 October 1994 or by 31 January 1995, whichever occurs first.\n\n \n\nBackground: The manufacturer has advised that incorrect P/N airframe fuel filter elements have been supplied.\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 instrument’s scope aligns with the stated purpose in the Background: it applies corrective action to the listed Eurocopter SA/AS 365 models because incorrect fuel filter elements were supplied. The AD sets mandatory compliance with the manufacturer’s specified Service Bulletins within a defined timeframe. Nothing in the AD text indicates an expansion or narrowing of scope beyond that original corrective intent (Applicability; Requirement; Background; Compliance)."},"complexity_factors":["Technical cross-reference to manufacturer mandatory Service Bulletins (SB No 28-04 and SB No 28-22) requiring users to consult external technical documents (Requirement).","Multiple helicopter models covered (SA 365 C variants and AS 365 N variants) creating model-specific applicability decisions for operators (Applicability).","A fixed, short compliance window (100 hours from 13 Oct 1994 or by 31 Jan 1995) which creates scheduling pressure and potential operational disruption (Compliance).","The AD arises from a supply-chain issue (incorrect P/N parts supplied), which introduces an implementation dependency on obtaining the correct parts (Background).","Ambiguity inherent in the phrase “as applicable” requires operators to determine which SB applies to their specific airframe configuration (Requirement)."],"plain_english_summary":"Operators of specified Eurocopter Dauphin SA/AS 365 C and N series helicopters must carry out the manufacturer’s mandatory service-bulletin corrective actions to inspect/replace incorrectly supplied airframe fuel filter elements.  \n\nCompliance is required within 100 flight hours from 13 Oct 1994 or by 31 Jan 1995, whichever is first; operators bear parts, labour and downtime costs and have limited discretion to defer or use alternatives."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific manufacturing defect. It has not expanded beyond its original purpose of ensuring correct fuel filter installation in affected Dauphin helicopter models."},"complexity_factors":["Single, specific technical requirement with clear alternative paths (two service bulletins depending on helicopter model)","Only one defined applicability criterion (aircraft model series)","Simple compliance deadline structure (whichever-occurs-first logic)","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","Background explanation is straightforward (manufacturer advisory)","Total length is extremely short (under 200 words of substantive content)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific Eurocopter Dauphin helicopters to replace or inspect fuel filter elements.\n\n**What it does:**\n- **Affected aircraft:** All Eurocopter SA 365 C, C1, C2, C3, and AS 365 N, N1, and N2 model helicopters\n- **The problem:** The manufacturer discovered that incorrect part number (P/N) fuel filter elements had been supplied for these helicopters — a safety risk because wrong filters could fail or allow contaminated fuel to reach the engine\n- **Required action:** Operators must follow specific manufacturer service bulletins (SB 28-04 for C-series, SB 28-22 for N-series) to fix the problem\n- **Deadline:** Complete the work within 100 flight hours after 13 October 1994, or by 31 January 1995 — whichever comes first\n\n**Why it matters:** Fuel filter failures in helicopters can cause engine failure, which is especially dangerous in rotary-wing aircraft that can't glide like fixed-wing planes. This AD prevents potential accidents by ensuring the correct fuel filters are installed."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dauphin-42-fuel-filter-elements","history":"/api/acts/ad-dauphin-42-fuel-filter-elements/history","analysis":"/api/acts/ad-dauphin-42-fuel-filter-elements/analysis","conflicts":"/api/acts/ad-dauphin-42-fuel-filter-elements/conflicts","importantCases":"/api/acts/ad-dauphin-42-fuel-filter-elements/important-cases","documents":"/api/acts/ad-dauphin-42-fuel-filter-elements/documents"}}