{"id":"F2006B07570","name":"AD/VAT/36 - Fuel Pump Heat Deflector - Modification","slug":"ad-vat-36-fuel-pump-heat-deflector-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50169,"registerId":"commonwealth-F2006B07570-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/VAT/36 - Fuel Pump Heat Deflector - Modification","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 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Victa and A.E.S.L. Airtourer Series Aeroplanes\n\n \n\nAD/VAT/36 Fuel Pump Heat Deflector - Modification 11/70\n\nApplicability: Airtourer 100, 115 and 150.\n\n \n\nRequirement: Install a deflector plate or similar device to ensure that the exhaust of hot air from the cabin heater distribution box assembly is deflected away from the electric fuel pump when the cabin heater is selected to the OFF position.\n\n \n\nNote: An acceptable means of compliance is a deflector manufactured to Drawing No. LVAC III which can be obtained from the Latrobe Valley Aero Club, Victoria.\n\n \n\nCompliance: Before 1 January 1971.\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":2,"scope_assessment":{"changed":false,"description":"The instrument's scope, as set out in the text, is a targeted mandatory modification for Airtourer 100, 115 and 150 aeroplanes to prevent hot air from the cabin heater distribution box reaching the electric fuel pump. The text specifies an acceptable design reference and a compliance deadline (Applicability; Requirement; Note; Compliance). There is no indication in the provided text that the directive's scope has been altered from that stated purpose."},"complexity_factors":["Narrow applicability: applies only to Airtourer 100, 115 and 150 (Applicability).","Single, specific technical requirement (install a deflector or similar device) rather than multiple or conditional obligations (Requirement).","Presence of an explicit acceptable means of compliance (Drawing No. LVAC III) reduces technical uncertainty (Note).","Firm, short compliance deadline (before 1 January 1971) creates a clear timeline but no phased obligations (Compliance).","No complex reporting, certification process or ongoing obligations described in the text (Requirement; Compliance)."],"plain_english_summary":"Owners/operators of Victa and A.E.S.L. Airtourer 100, 115 and 150 aeroplanes must fit a physical deflector (or equivalent) to direct hot air from the cabin heater away from the electric fuel pump, complying by 1 January 1971. One acceptable design is Drawing No. LVAC III (available from Latrobe Valley Aero Club), but equivalent devices are permitted.\n\nThe obligation and associated parts, installation and downtime costs fall to aircraft owners/operators, creating a short-term market for retrofit parts and maintenance."},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1970 addressing a specific safety defect. It has not expanded beyond its original narrow purpose of requiring a heat deflector installation."},"complexity_factors":["Single, unambiguous requirement with no conditional logic","No defined terms section","No cross-references to other legislation or regulations","Straightforward applicability criteria (three specific aircraft models)","Single compliance date with no exceptions or extensions","Total length is approximately 150 words"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's aviation regulator (CASA) requiring specific repairs or modifications to aircraft.\n\n**What it does:**\nOrders owners of certain **Victa and A.E.S.L. Airtourer** light aircraft (models 100, 115, and 150) to install a heat shield or deflector plate. This prevents hot air from the cabin heater — when switched off — from blowing directly onto the electric fuel pump, which could overheat it and create a fire risk.\n\n**Who it affects:**\nOwners and operators of these specific Airtourer aircraft models.\n\n**Why it matters:**\nFuel pumps and excessive heat don't mix. This simple modification prevents potential fuel pump failure or fire. The directive suggests a specific part (Drawing No. LVAC III) available from the Latrobe Valley Aero Club in Victoria as an acceptable solution.\n\n**Deadline:**\nThe fix had to be completed before 1 January 1971 (this is a historical directive from 1970)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-vat-36-fuel-pump-heat-deflector-modification","history":"/api/acts/ad-vat-36-fuel-pump-heat-deflector-modification/history","analysis":"/api/acts/ad-vat-36-fuel-pump-heat-deflector-modification/analysis","conflicts":"/api/acts/ad-vat-36-fuel-pump-heat-deflector-modification/conflicts","importantCases":"/api/acts/ad-vat-36-fuel-pump-heat-deflector-modification/important-cases","documents":"/api/acts/ad-vat-36-fuel-pump-heat-deflector-modification/documents"}}