{"id":"F2006B08642","name":"AD/CON/65 - Fuel Pump Screen","slug":"ad-con-65-fuel-pump-screen","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51681,"registerId":"commonwealth-F2006B08642-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CON/65 - Fuel Pump Screen","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)  Teledyne Continental Motors Piston Engines\n\n \n\nAD/CON/65 Fuel Pump Screen 13/92\n\nApplicability: All A-65, A75, C75, C85, C90, A-100, C125, O-200 series engines fitted with AC fuel pumps P/N 40585, 40695 or 631391.\n\n \n\nRequirement: Action in accordance with Continental Aircraft Service Bulletin M81-8.\n\n \n\nNote: FAA Airworthiness Directive 81-07-06 refers.\n\nCompliance:  Effective 10 December 1992: At intervals not to exceed 12 months time in service. Background:              The requirements of AD/CON/39A have been reissued following the review of all\n\nContinental Piston Engine Directives. The requirements of FAA Airworthiness\n\nDirective 81-07-06 are still effective and appropriate.\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":2,"scope_assessment":{"changed":false,"description":"The instrument reissues prior requirements after a review of Continental piston-engine directives and states that the FAA Airworthiness Directive remains \"effective and appropriate.\" The text indicates reissuance rather than expansion or narrowing of the subject population or obligations (Background). The applicability, required action and annual compliance interval are restated rather than modified (Applicability; Requirement; Compliance)."},"complexity_factors":["Narrow, technical scope limited to specific engine series and three pump part numbers (Applicability).","Compliance depends on an external manufacturer service bulletin for the technical steps (Requirement: Continental Aircraft Service Bulletin M81-8).","Simple, fixed periodicity: repeat at intervals not to exceed 12 months (Compliance).","Cross-reference to an FAA AD and reissue language adds administrative context but no additional procedural layers (Background).","No multiple exception regimes, penalty schemes, or alternative compliance pathways set out in the text."],"plain_english_summary":"What this instrument requires, mechanically\n\n- This Airworthiness Directive (AD/CON/65) requires owners/operators to carry out the action set out in Continental Aircraft Service Bulletin M81-8 on specified Teledyne Continental Motors piston engines fitted with certain AC fuel pumps. (See: \"Applicability: All A-65, A75, C75, C85, C90, A-100, C125, O-200 series engines fitted with AC fuel pumps P/N 40585, 40695 or 631391.\" and \"Requirement: Action in accordance with Continental Aircraft Service Bulletin M81-8.\")\n- The work must be repeated at intervals not to exceed 12 months time in service. (See: \"Compliance: Effective 10 December 1992: At intervals not to exceed 12 months time in service.\")\n\nWho this affects\n\n- Aircraft owners and operators who use the listed engine models fitted with the listed fuel pump part numbers. (Applicability, above.)\n- Parties who perform maintenance on those engines and pumps because they will be engaged to perform the service specified by the referenced service bulletin. (Requirement, above.)\n\nWhy it matters (official rationale, attributed)\n\n- The AD was reissued after a review of Continental piston-engine directives and references an existing FAA Airworthiness Directive. The text states the FAA directive remains \"effective and appropriate.\" (See: \"Background: The requirements of AD/CON/39A have been reissued following the review of all Continental Piston Engine Directives... The requirements of FAA Airworthiness Directive 81-07-06 are still effective and appropriate.\")\n\nTesting the official rationale against costs, incentives and implementation mechanics\n\n- Who pays: Owners/operators must bear the direct costs of complying with the AD (parts, labour and aircraft downtime) because the instrument requires them to perform the action in the service bulletin. (Requirement; Compliance.)\n- Incentives created: The directive creates a clear private incentive to schedule the required maintenance at least annually to meet the AD. That produces recurring demand for the specified work. (Compliance interval: \"at intervals not to exceed 12 months time in service.\")\n- Trade-offs and opportunity costs: The recurring (annual) maintenance requirement imposes ongoing cost and aircraft downtime in exchange for the safety goal identified by the AD (as supported by the background reference to the FAA AD). Owners choose between spending on compliance and allocating those resources elsewhere. (Requirement; Background.)\n- Compliance burden and administrative mechanics: The AD delegates technical detail to the manufacturer service bulletin (Continental Aircraft Service Bulletin M81-8). The AD therefore makes compliance contingent on following an external document for the method and scope of work. This concentrates regulatory instruction but requires operators to obtain and follow that bulletin. (Requirement.)\n- Implementation risk: If an operator does not follow the service bulletin precisely, the AD’s intended effect may not be realised. The AD itself does not describe the technical steps — it references the service bulletin for them. (Requirement.)\n- Bureaucratic discretion: The AD is an instrument of the Civil Aviation safety framework (header: \"Civil Aviation Regulations 1998 ... Civil Aviation Safety Authority\") and cross-references an FAA AD, indicating regulatory coordination rather than a change in technical content. The AD text notes the reissuance followed a review. (Header; Background.)\n- Effects on private markets and service providers: The required, periodic maintenance creates demand for parts and labour for the specified pumps and engines. That demand accrues to whoever supplies or performs the work; the AD does not itself limit who may perform it but makes performance mandatory for affected operators. (Applicability; Requirement; Compliance.)\n\nConcentrated benefits, diffuse costs and capture risk (mechanisms, not labels)\n\n- Concentration of costs: The direct financial and time costs fall on the subset of owners/operators who have the listed engines fitted with the listed pump part numbers (a concentrated set of payers). (Applicability; Compliance.)\n- Concentration of procedural instruction: The AD relies on a single manufacturer service bulletin for the method of compliance, concentrating technical authority in that document. That creates a dependency on the manufacturer’s procedure to satisfy the regulatory requirement. (Requirement.)\n\nNet operational effect in plain terms\n\n- Operators of the listed engines must arrange an annual action (inspection/clean/repair/replacement as defined in Continental Aircraft Service Bulletin M81-8) for pumps with part numbers 40585, 40695 or 631391. The AD enforces that action by making it a compliance requirement under the Civil Aviation framework and references an FAA AD as continuing corroboration of the technical need. (Applicability; Requirement; Compliance; Background.)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a routine, narrow maintenance directive focused specifically on fuel pump screen inspection for a limited range of Continental engines. It has not expanded beyond its original safety purpose. The document notes it is a reissue of earlier requirements (AD/CON/39A) following a review, suggesting consolidation rather than scope creep."},"complexity_factors":["Single, straightforward maintenance requirement (inspect/clean fuel pump screen)","Only 3 defined part numbers and 8 engine series in applicability section","No nested exceptions or conditional logic — either your engine is listed or it isn't","Cross-reference to only one external document (Service Bulletin M81-8)","Length: approximately 150 words of substantive content","Simple temporal compliance trigger (12 months time in service)"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it like a compulsory recall notice, but for aircraft engines rather than cars.\n\n**What it requires:** Owners and operators of specific Teledyne Continental Motors piston engines must inspect or maintain the fuel pump screen at least once every 12 months of engine operation. The exact steps are found in a manufacturer document called \"Continental Aircraft Service Bulletin M81-8\" — the AD doesn't repeat those instructions, it just makes them legally binding.\n\n**Who it affects:** Anyone operating aircraft with these specific engine models: A-65, A75, C75, C85, C90, A-100, C125, and O-200 series engines, but **only if** they use specific AC fuel pump part numbers (40585, 40695, or 631391).\n\n**Why it matters:** Fuel pump screens prevent debris from entering the engine's fuel system. If clogged or damaged, they can cause fuel starvation, engine failure, and potentially a crash. This rule ensures regular checks happen to catch problems before they become dangerous.\n\n**Key details:**\n- **Compliance deadline:** Became mandatory on 10 December 1992\n- **Frequency:** Every 12 months of \"time in service\" (actual running hours, not calendar time)\n- **Background:** This replaced an earlier directive (AD/CON/39A) after CASA reviewed all Continental engine safety orders. It aligns with a US Federal Aviation Administration (FAA) directive on the same issue."}},"importantCases":[],"_links":{"self":"/api/acts/ad-con-65-fuel-pump-screen","history":"/api/acts/ad-con-65-fuel-pump-screen/history","analysis":"/api/acts/ad-con-65-fuel-pump-screen/analysis","conflicts":"/api/acts/ad-con-65-fuel-pump-screen/conflicts","importantCases":"/api/acts/ad-con-65-fuel-pump-screen/important-cases","documents":"/api/acts/ad-con-65-fuel-pump-screen/documents"}}