{"id":"F2006B02321","name":"AD/ALF/7 - Oil System Debris Management","slug":"ad-alf-7-oil-system-debris-management","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41551,"registerId":"commonwealth-F2006B02321-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ALF/7 - Oil System Debris Management","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)  AlliedSignal (Lycoming) Turbine Engines - ALF502 and LF507 Series\n\n \n\nAD/ALF/7 Oil System Debris Management 12/92\n\nCANCELLED.\n\n \n\nBackground: The inspection, monitoring and action requirements of this Directive are now published in the Textron Lycoming ALF502R Engine Manual, Chapter 72-00-00, Special Inspection - 02.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a cancellation instrument that simply retires an existing directive. It has no scope beyond formally terminating the previous AD and redirecting compliance to the engine manual."},"complexity_factors":["Document is only 8 lines of substantive content","No defined terms section","No conditional logic or cross-references to other legislation","Single simple operation: cancellation with pointer to replacement documentation","No operative provisions remaining (directive is cancelled)"],"plain_english_summary":"**What this is:** This is a cancelled Airworthiness Directive (AD) for certain aircraft turbine engines.\n\n**What it did:** Originally issued in December 1992, this directive required operators of AlliedSignal (Lycoming) ALF502 and LF507 series turbine engines to inspect, monitor, and take specific actions regarding debris in the oil system. These are safety-critical engines used in some business jets and regional aircraft.\n\n**Why it's cancelled:** The safety requirements previously contained in this directive have been moved into the official engine manual (Textron Lycoming ALF502R Engine Manual, Chapter 72-00-00). When safety rules get incorporated into manufacturer manuals, the standalone directive becomes redundant and gets cancelled.\n\n**Who it affects:** Aircraft operators and maintenance organisations using these specific engine models. They must now follow the manual instead of this directive.\n\n**Why it matters:** This shows how aviation safety regulation evolves—mandatory safety actions often start as emergency directives, then get permanently embedded in technical manuals once the manufacturer updates their documentation."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The directive’s operative scope changed: AD/ALF/7 was cancelled and its inspection, monitoring and action requirements were moved into the Textron Lycoming ALF502R Engine Manual, Chapter 72-00-00, Special Inspection - 02 (Background line). Practically, the source of procedural detail shifts from the regulatory AD to the manufacturer’s manual, so anyone needing to confirm or comply with the requirements must consult that manual. The cancellation text does not itself reproduce the prior AD’s procedures or state how regulator oversight will reference the manual."},"complexity_factors":["Very short instrument: the directive is a single-line cancellation with a one-line background statement.","Operational requirements are relocated to an external document (Textron Lycoming ALF502R Engine Manual, Chapter 72-00-00), requiring users to consult that manual for details.","Lack of prescriptive detail in the AD itself — the AD no longer contains inspection intervals, methods, or action items.","Potential for compliance ambiguity: enforcement and update mechanics are not described in the cancellation text.","Dependency on access to and the current edition of a manufacturer-controlled manual for exact obligations."],"plain_english_summary":"The Airworthiness Directive AD/ALF/7 (\"Oil System Debris Management\") has been cancelled and its inspection, monitoring, and corrective requirements are now published in the Textron Lycoming ALF502R Engine Manual (Chapter 72‑00‑00, “Special Inspection ‑ 02”). This shifts procedural authority from the AD to the manufacturer’s manual, affecting ALF502/LF507 engine operators, owners, and maintenance providers who must consult the manual to determine and fund required inspections and actions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-alf-7-oil-system-debris-management","history":"/api/acts/ad-alf-7-oil-system-debris-management/history","analysis":"/api/acts/ad-alf-7-oil-system-debris-management/analysis","conflicts":"/api/acts/ad-alf-7-oil-system-debris-management/conflicts","importantCases":"/api/acts/ad-alf-7-oil-system-debris-management/important-cases","documents":"/api/acts/ad-alf-7-oil-system-debris-management/documents"}}