{"id":"F2006B08716","name":"AD/DART/3 - Fuel Washed Burners","slug":"ad-dart-3-fuel-washed-burners","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51914,"registerId":"commonwealth-F2006B08716-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DART/3 - Fuel Washed Burners","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)  Rolls Royce Turbine Engines - Dart Series\n\n \n\nAD/DART/3 Fuel Washed Burners 11/87\n\nApplicability: All Dart RDa-6, RDa-7 series engines featuring Mod. 827 and/or Mod. 1224 fuel washed burners.\n\n \n\nRequirement: 1. Action in accordance with Rolls Royce SB Da 73-A54 Rev 3; or\n\n \n\n2. AD/RRT/10.\n\n \n\nEffectivity: Forthwith.\n\n \n\nBackground: Reissue of AD/RRT/10.\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 instrument states it is a reissue of AD/RRT/10 (Background). The applicability and the required compliance options are the same in this text: the directive applies to Dart RDa-6 and RDa-7 engines with Mod. 827 and/or Mod. 1224 and requires action per Rolls Royce SB Da 73-A54 Rev 3 or AD/RRT/10 (Applicability; Requirement). Based on the text supplied, the scope has not been changed in this reissue."},"complexity_factors":["Narrow technical applicability limited to Dart RDa-6 and RDa-7 engines with Mod. 827 and/or Mod. 1224 (Applicability)","Substantive requirements are cross-referenced to external documents (Rolls Royce Service Bulletin Da 73-A54 Rev 3 and AD/RRT/10), requiring users to obtain and read those materials (Requirement)","Immediate effectivity creates operational urgency and potential scheduling/downtime complexity (Effectivity)","Short, procedural text with little internal detail — compliance depends on interpreting and applying external technical material (Requirement, Background)"],"plain_english_summary":"This instrument immediately reissues AD/RRT/10, requiring operators of Rolls‑Royce Dart RDa‑6 and RDa‑7 engines fitted with Mod. 827 and/or Mod. 1224 to carry out the work in Rolls‑Royce Service Bulletin Da 73‑A54 Rev 3 or comply with AD/RRT/10. It affects aircraft operators, owners and maintenance organisations, who must promptly schedule the mandated actions, bear the costs (labour, parts, downtime), choose which compliance route to use, and document completion to meet the airworthiness requirement."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive focused on a specific mechanical component in specific engine models. It has not expanded beyond its original purpose of addressing fuel washed burner safety issues."},"complexity_factors":["Extremely short document (under 200 words)","Only 2 substantive requirements with an either/or choice","Single defined applicability criterion (engine models and modification numbers)","No nested exceptions or conditional logic","No cross-references to other legislation beyond a single alternative directive and one service bulletin","Plain language throughout ('forthwith', 'reissue') with minimal aviation jargon"],"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). ADs are legally binding instructions that aircraft owners and operators must follow to fix unsafe conditions in aircraft, engines, or equipment.\n\n**What it does:** This directive applies to specific **Rolls-Royce Dart turboprop engines** (RDa-6 and RDa-7 series) that have a particular type of fuel burner system (Mod. 827 and/or Mod. 1224). It requires operators to take one of two actions:\n- **Option 1:** Follow Rolls-Royce Service Bulletin Da 73-A54 (Revision 3) — essentially, follow the manufacturer's official repair instructions; **OR**\n- **Option 2:** Comply with a different directive called AD/RRT/10.\n\n**Who it affects:** Anyone operating aircraft with these specific Rolls-Royce Dart engines — typically older regional airliners and military aircraft like the Fokker F27, HS 748, or Vickers Viscount.\n\n**Why it matters:** \"Fuel washed burners\" are components where fuel flows to clean or cool parts of the combustion system. Problems here can cause engine fires, flameouts, or catastrophic failure. This directive ensures operators address a known safety defect **immediately** (\"forthwith\" means right now, no grace period).\n\n**Key point:** This is a **reissue** — it replaces an older directive (AD/RRT/10) with clearer or updated instructions, but the safety requirement remains urgent."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dart-3-fuel-washed-burners","history":"/api/acts/ad-dart-3-fuel-washed-burners/history","analysis":"/api/acts/ad-dart-3-fuel-washed-burners/analysis","conflicts":"/api/acts/ad-dart-3-fuel-washed-burners/conflicts","importantCases":"/api/acts/ad-dart-3-fuel-washed-burners/important-cases","documents":"/api/acts/ad-dart-3-fuel-washed-burners/documents"}}