{"id":"F2006B11198","name":"AD/LYC/106 - RYCO R14 Oil Filters","slug":"ad-lyc-106-ryco-r14-oil-filters","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56907,"registerId":"commonwealth-F2006B11198-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Lycoming Piston Engines","sectionType":"part","heading":"Lycoming Piston Engines","content":"# ![](image.001.png)  \n![](image.002.png)  \nLycoming Piston Engines\n\nAIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.003.png)For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.004.png)","sortOrder":0},{"sectionNumber":"David Alan Villiers","sectionType":"part","heading":"David Alan Villiers","content":"# David Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 16 May 2001\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 23 May 2001.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The supplied AD excerpt sets out the mechanism and legal basis for requiring corrective action to address an unsafe condition and identifies Lycoming piston engines / RYCO R14 oil filters in its title. The excerpt contains no information indicating the AD amends, supersedes or narrows an earlier instrument or that the AD’s scope was altered from an original intent. Based on the supplied text alone, there is no evidence of a scope change."},"complexity_factors":["The AD references separate requirement, applicability and compliance sections (the operational detail is contained in those sections rather than the introductory text).","Technical subject matter (aircraft piston engines and oil filters) requires specialised maintenance and parts knowledge to implement.","Regulatory authority and discretion are delegated to a CASA delegate under subregulation 39.1(1) of CAR 1998, which introduces administrative decision points.","Costs and scheduling impacts fall on private owners/operators, creating coordination needs between operators and maintenance providers.","The excerpt lacks the specific prescribed actions and timelines, requiring readers to consult the full AD text or referenced documents to determine precise obligations.","Potential interactions with other airworthiness requirements or maintenance schedules could create compliance sequencing complexity."],"plain_english_summary":"This is a CASA Airworthiness Directive (AD/LYC/106) issued by a CASA delegate on 16 May 2001 requiring specified corrective actions for RYCO R14 oil filters on Lycoming piston engines to address an identified unsafe condition. It creates a legal obligation on affected owners/operators and maintenance organisations to carry out the mandated work within the AD’s stated circumstances and compliance times."},"kimi_summary":{"content_quality":"rejected","complexity_score":3,"rejection_reason":"This appears to be a header/preamble fragment of an Airworthiness Directive with significant formatting artifacts, missing substantive content (the actual applicability, requirement, and compliance sections are referenced but not included), and OCR errors. The document contains only the issuing authority information and template language, not the actual legislative requirements.","scope_assessment":{"changed":false,"description":"This appears to be a standard single-issue Airworthiness Directive addressing a specific unsafe condition with a particular oil filter model. The scope is narrow and targeted, consistent with the original purpose of ADs."},"complexity_factors":["Document appears to be a header/preamble only — the substantive technical requirements (applicability, requirement, compliance sections) are not included in this extract","Heavy use of image placeholders (image.001.png, etc.) suggesting this is a scanned document conversion with formatting artifacts","Standard CASA AD template structure with cross-references to CAR 1998 (Civil Aviation Regulations 1998), specifically subregulation 39.1(1)","Repetitive text artifacts ('Lycoming Piston Engines' appears multiple times, 'David Alan Villiers' repeated) indicating OCR or formatting errors","Relies on external technical knowledge (RYCO R14 filter specifications, Lycoming engine models) not defined in the visible text"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by the Civil Aviation Safety Authority (CASA) on 16 May 2001. An Airworthiness Directive is a mandatory safety notice that requires aircraft owners or operators to take specific action to fix an unsafe condition.\n\n**What it does:**\n- Requires specific maintenance action on **RYCO R14 oil filters** used on **Lycoming piston engines**\n- The exact technical requirements, applicability, and compliance deadlines would normally appear in the \"applicability,\" \"requirement,\" and \"compliance\" sections referenced in the preamble, though these sections appear to be missing or truncated from this extract\n\n**Who it affects:**\n- Owners and operators of aircraft with Lycoming piston engines that use RYCO R14 oil filters\n- Maintenance organisations servicing these engines\n\n**Why it matters:**\n- Oil filters are critical safety components. A failure could lead to engine failure in flight\n- Compliance is **legally mandatory** — failure to follow an AD can result in the aircraft being deemed unairworthy and grounded"}},"importantCases":[],"_links":{"self":"/api/acts/ad-lyc-106-ryco-r14-oil-filters","history":"/api/acts/ad-lyc-106-ryco-r14-oil-filters/history","analysis":"/api/acts/ad-lyc-106-ryco-r14-oil-filters/analysis","conflicts":"/api/acts/ad-lyc-106-ryco-r14-oil-filters/conflicts","importantCases":"/api/acts/ad-lyc-106-ryco-r14-oil-filters/important-cases","documents":"/api/acts/ad-lyc-106-ryco-r14-oil-filters/documents"}}