{"id":"F2006B03848","name":"AD/BEECH 35/52 - Goodyear Fuel Cells","slug":"ad-beech-35-52-goodyear-fuel-cells","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43457,"registerId":"commonwealth-F2006B03848-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/52 - Goodyear Fuel Cells","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)  Beechcraft 35 (Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 35/52 Goodyear Fuel Cells 6/78\n\nApplicability: Models P35, S35, V35, V35-TC, V35A, V35A-TC, V35B and V35B-TC with S/Nos.\n\nD7067 to D-9537 fitted with Goodyear BTC-39 fuel cells.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 0895.\n\n \n\nCompliance: Within 100 hours time in service after 30 June 1978 and thereafter at intervals not exceeding twelve months.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on Goodyear fuel cells in particular Beechcraft models. It has not expanded beyond its original safety purpose. The scope remains tightly constrained to the identified airworthiness concern."},"complexity_factors":["Very short document (under 200 words)","Only 2 substantive requirements: applicability criteria and compliance deadline","Single cross-reference to external technical document (Beechcraft SI No. 0895) — the actual detailed instructions are contained there, not in this instrument","No defined terms section","Simple conditional logic: if aircraft matches applicability criteria, then compliance required","No nested exceptions or complex procedural steps within the instrument itself"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) for specific Beechcraft Bonanza aeroplanes.\n\n**What it does:**\n- Requires owners and operators of certain Beechcraft 35 series planes (models P35, S35, V35, V35-TC, V35A, V35A-TC, V35B and V35B-TC with serial numbers D7067 to D-9537) to take specific maintenance action on their **Goodyear BTC-39 fuel cells** (the rubber bladders inside the fuel tanks).\n- The required action is detailed in **Beechcraft Service Instruction No. 0895** — a technical document from the manufacturer that tells mechanics exactly what to inspect, repair, or replace.\n\n**Who it affects:**\n- Owners and operators of the specified Beechcraft Bonanza models fitted with these particular Goodyear fuel cells.\n- Licensed aircraft maintenance engineers who must carry out the work.\n\n**Why it matters:**\n- Fuel cell failures can cause fuel leaks, which create fire hazards and can lead to engine failure. This AD was issued to prevent potentially catastrophic accidents.\n- **Compliance is mandatory and time-critical:** The work must be done within 100 hours of flying time after 30 June 1978, and then repeated every 12 months thereafter.\n\n**Key takeaway:** If you own one of these specific Bonanza models, you must have your fuel cells inspected and maintained according to the manufacturer's instructions on a strict schedule — or the aircraft cannot legally fly."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The document sets a specific, limited scope: the named Beechcraft 35-series models with serial numbers D7067 to D-9537 fitted with Goodyear BTC-39 fuel cells, and requires action per Beechcraft SI No. 0895 at the stated intervals (Applicability; Requirement; Compliance). The text contains no indication that the scope has been altered from its stated terms or that it deviates from its original stated applicability or compliance schedule."},"complexity_factors":["Narrow, specific applicability to listed Beechcraft 35 variants and serial numbers (Applicability).","Dependence on an external technical document (Beechcraft SI No. 0895) for the actual maintenance instructions (Requirement).","A simple, recurring compliance schedule with a historic initial window and annual repeat intervals (Compliance).","Technical execution requires certified maintenance personnel and parts availability, which adds operational complexity beyond the AD text.","No procedural detail in the AD itself — cross-referencing an SI requires operators to obtain and interpret another document."],"plain_english_summary":"This Airworthiness Directive from CASA mandates that owners/operators of specified Beechcraft Model 35 (serials D7067–D9537) fitted with Goodyear BTC‑39 fuel cells carry out the maintenance actions set out in Beechcraft Service Instruction No. 0895. \n\nCompliance is required within 100 flight hours after 30 June 1978 and then annually; owners/operators must arrange and fund the work, and CASA enforces compliance through normal airworthiness oversight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-52-goodyear-fuel-cells","history":"/api/acts/ad-beech-35-52-goodyear-fuel-cells/history","analysis":"/api/acts/ad-beech-35-52-goodyear-fuel-cells/analysis","conflicts":"/api/acts/ad-beech-35-52-goodyear-fuel-cells/conflicts","importantCases":"/api/acts/ad-beech-35-52-goodyear-fuel-cells/important-cases","documents":"/api/acts/ad-beech-35-52-goodyear-fuel-cells/documents"}}