{"id":"F2006B08721","name":"AD/DART/9 - Aeroquip Fuel Pipes","slug":"ad-dart-9-aeroquip-fuel-pipes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51933,"registerId":"commonwealth-F2006B08721-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DART/9 - Aeroquip Fuel Pipes","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/9 Aeroquip Fuel Pipes 11/87\n\nApplicability: All Dart RDa-6, RDa-7 series engines.\n\n \n\nRequirement: 1. Action in accordance with Rolls Royce SB Da 73-A76; or\n\n \n\n2. AD/RRT/34.\n\n \n\nEffectivity: Forthwith.\n\n \n\nBackground: Reissue of AD/RRT/34.\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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument states it is a reissue of AD/RRT/34 (Background) and repeats the same applicability (all Rolls Royce Dart RDa-6 and RDa-7 series engines) and compliance routes (Rolls Royce SB Da 73-A76 or AD/RRT/34) (Applicability; Requirement). The published text does not introduce new classes of equipment, additional actions, or altered compliance paths beyond the reissued AD, so the scope appears unchanged from the prior AD."},"complexity_factors":["Short, narrowly targeted directive with limited text (low overall length).","Relies on external technical documents (Rolls Royce SB Da 73-A76 and AD/RRT/34) for procedural detail, increasing practical complexity for implementers.","Immediate effectivity (‘Forthwith’) raises logistical and scheduling complexity for operators.","Binary compliance path (two specified documents) reduces legal ambiguity but requires access to and interpretation of those documents.","No detailed enforcement, timing, or parts/approval provisions in the text increases operational uncertainty."],"plain_english_summary":"This Airworthiness Directive (AD/DART/9) requires owners and operators of aircraft with Rolls‑Royce Dart RDa‑6 and RDa‑7 engines to, forthwith, comply by following either Rolls‑Royce Service Bulletin Da 73‑A76 or the earlier AD/RRT/34.  \n\nIt immediately mandates a technical remedy, affecting operators and maintenance organisations, imposes direct compliance costs and downtime, and requires access to the external service bulletin or prior AD to carry out the mandated work."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive focused on a specific technical defect in specific engine models. It has not expanded beyond its original safety purpose."},"complexity_factors":["Extremely short document (under 200 words)","Only 2 substantive requirements, presented as simple alternatives","No defined terms section — relies on external references (Rolls-Royce SB and previous AD)","No conditional logic or nested exceptions","Single applicability criterion (engine model series)","Minimal cross-referencing (only to one service bulletin and one previous AD)"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) that requires aircraft owners or operators to take specific action to fix a known safety problem.\n\n**What it does:** This directive (numbered AD/DART/9) applies to **Rolls-Royce Dart engines** (specifically the RDa-6 and RDa-7 series). It requires operators to either:\n- Follow the instructions in **Rolls-Royce Service Bulletin Da 73-A76** (a manufacturer-issued technical repair notice); OR\n- Comply with a previous directive called **AD/RRT/34**\n\n**Who it affects:** Anyone operating aircraft with these specific Rolls-Royce Dart turbine engines — typically older regional airliners and military aircraft.\n\n**Why it matters:** The directive addresses a safety issue with **Aeroquip fuel pipes** (fuel lines made by a company called Aeroquip). Fuel system defects can cause engine failure or fire. The phrase \"Forthwith\" means operators must act **immediately** — there's no grace period.\n\n**Background note:** This is a reissue of an earlier directive, suggesting the safety issue required updated or clarified instructions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dart-9-aeroquip-fuel-pipes","history":"/api/acts/ad-dart-9-aeroquip-fuel-pipes/history","analysis":"/api/acts/ad-dart-9-aeroquip-fuel-pipes/analysis","conflicts":"/api/acts/ad-dart-9-aeroquip-fuel-pipes/conflicts","importantCases":"/api/acts/ad-dart-9-aeroquip-fuel-pipes/important-cases","documents":"/api/acts/ad-dart-9-aeroquip-fuel-pipes/documents"}}