{"id":"F2006B08713","name":"AD/DART/27 Amdt 1 - Engine Fuel and Control - Fuel Burner Flow Calibration Checks and Life Limitation","slug":"ad-dart-27-amdt-1-engine-fuel-and-control-fuel-burner-flow-calibration-checks-and-life-limitation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51909,"registerId":"commonwealth-F2006B08713-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DART/27 Amdt 1 - Engine Fuel and Control - Fuel Burner Flow Calibration Checks and Life Limitation","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/DART/27 and issues the following 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.\n\nRolls Royce Turbine Engines \\- Dart Series\n\nAD/DART/27\n\nAmdt 1\n\n  \n\nEngine Fuel a nd Control \\- Fuel Burner Flow Calibration Checks and Life Limitation\n\n  \n4/2003\n\nApplicability: Rolls Royce Dart engines as specified in the requirement document.\n\nRequirement: Action per the requirements of Germany (LBA) Airworthiness Directive 2002-365.\n\nCompliance: As detailed in the requirement document including repetitive inspections with a revised effective date of this directive.\n\nThis Amendment becomes effective on 17 April 2003.\n\nBackground: Fuel burner flow variations and the consequent vibration is found to adversely affect the high pressure turbine discs. This Directive introduces control measures to limit the adverse effects.\n\nThe original issue of this Airworthiness Directive became effective on 5 August 1998.\n\n![Signature of James Coyne Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 5 March 2003\n\n![](image.003.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 26 March 2003.\n\n  \nPage 1 of 1","sortOrder":0}],"analysis":{"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":6,"scope_assessment":{"changed":true,"description":"This amendment revokes the original AD and replaces it with a requirement to follow Germany (LBA) AD 2002‑365 (Requirement). It updates the effective date and explicitly requires repetitive fuel‑burner flow calibration checks and introduces life‑limitation/control measures to address flow‑induced vibration affecting high‑pressure turbine discs (Background; Requirement)."},"complexity_factors":["Cross‑reference to an external foreign directive (Germany LBA AD 2002‑365) rather than full text in the instrument","Technical, engine‑specific inspections and calibration checks requiring specialist maintenance","Repetitive inspection scheduling and a revised effective date that affect operational planning","Introduction of a life‑limitation on parts (imposes replacement timing/costs)","Revocation and replacement of a previous AD (interaction with legacy compliance records)","Regulatory enforcement by CASA delegate with limited operational detail in the AD itself"],"plain_english_summary":"This amendment replaces the earlier Airworthiness Directive for Rolls‑Royce Dart engines and requires operators to follow the actions set out in the German (LBA) Airworthiness Directive 2002‑365. It mandates fuel‑burner flow calibration checks, repetitive inspections and life‑limitation measures to address fuel‑burner flow variations that cause vibration and can damage high‑pressure turbine discs. Operators must carry out the inspections and any required part replacements; the Civil Aviation Safety Authority enforces compliance (Requirement; Background)."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of addressing fuel burner flow issues in Rolls-Royce Dart engines. It updates the technical requirements by referencing a newer German directive and revises compliance dates, but does not expand beyond the original safety purpose of preventing turbine disc damage from fuel flow variations."},"complexity_factors":["Very short document (1 page) with minimal text","Only 4 defined structural sections (Applicability, Requirement, Compliance, Background)","Heavy reliance on external documents — the actual technical requirements are contained in a referenced German directive (LBA 2002-365) and unspecified 'requirement document', making the full obligations opaque without cross-referencing","No nested conditional logic or exceptions within the visible text","Simple linear structure: revoke old AD → issue new AD → state problem → mandate external standard"],"plain_english_summary":"This CASA Airworthiness Directive replaces an earlier 1998 order and mandates revised maintenance for Rolls‑Royce Dart turbine engines to stop fuel‑burner flow variations that cause vibration and damage high‑pressure turbine discs. Affected are aircraft owners/operators and maintenance organisations; compliance means following the referenced German LBA technical requirements for burner flow calibration, new life limits, and recurring inspections to prevent engine failure and protect flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dart-27-amdt-1-engine-fuel-and-control-fuel-burner-flow-calibration-checks-and-life-limitation","history":"/api/acts/ad-dart-27-amdt-1-engine-fuel-and-control-fuel-burner-flow-calibration-checks-and-life-limitation/history","analysis":"/api/acts/ad-dart-27-amdt-1-engine-fuel-and-control-fuel-burner-flow-calibration-checks-and-life-limitation/analysis","conflicts":"/api/acts/ad-dart-27-amdt-1-engine-fuel-and-control-fuel-burner-flow-calibration-checks-and-life-limitation/conflicts","importantCases":"/api/acts/ad-dart-27-amdt-1-engine-fuel-and-control-fuel-burner-flow-calibration-checks-and-life-limitation/important-cases","documents":"/api/acts/ad-dart-27-amdt-1-engine-fuel-and-control-fuel-burner-flow-calibration-checks-and-life-limitation/documents"}}