{"id":"F2006B03998","name":"AD/BEECH 55/54 - Goodyear Fuel Cells","slug":"ad-beech-55-54-goodyear-fuel-cells","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43607,"registerId":"commonwealth-F2006B03998-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 55/54 - 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 55, 58 and 95-55 (Baron) Series Aeroplanes\n\n \n\nAD/BEECH 55/54 Goodyear Fuel Cells 6/78\n\nApplicability: Models 95-A55, 95-B55 and 95-B55A with S/Nos. TC-380 to TC-1607; 95-C55, 95- C55A, D55, D55A, E55 and E55A with S/Nos. TC-350 and TE-1 to TE-942; 95-\n\nB55B (T42A) with S/Nos. TF-1 to TF-65; 58 and 58A with S/Nos. TH-1 to TH-384 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\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":3,"scope_assessment":{"changed":false,"description":"The AD text provides a clear applicability, a requirement to follow Beechcraft SI No. 0895, and a compliance timetable. The supplied text does not indicate any amendment or change from an earlier instrument or from an original intent; there is no language in this AD purporting to alter its own scope after issue."},"complexity_factors":["Applicability specifies multiple models and serial number ranges (adds identification complexity)","Technical actions are delegated to an external document (Beechcraft SI No. 0895) rather than included in the AD","Recurring compliance schedule (initial 100 hours after a calendar date, then at intervals not exceeding 12 months) requires record-keeping and tracking","AD text does not specify costs, enforcement mechanisms, or alternative-compliance procedures (practical complexity lies outside the AD)","Date- and hours-based deadline combined (operator must calculate hours in service relative to a calendar date)"],"plain_english_summary":"This AD covers specified Beechcraft piston airplanes with Goodyear BTC‑39 fuel cells and requires operators to perform the work set out in Beechcraft Service Instruction No. 0895 within 100 hours’ time‑in‑service after 30 June 1978 and thereafter at intervals not exceeding 12 months. It creates a recurring legal maintenance obligation for listed owners/operators, delegates technical detail to the Service Instruction, and is silent on costs or alternative compliance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused specifically on Goodyear fuel cells in particular Beechcraft aircraft. It has not expanded beyond its original narrow technical purpose."},"complexity_factors":["Single, straightforward requirement referencing an external technical document (Beechcraft SI No. 0895)","Clear applicability section using specific model and serial number ranges","Simple compliance timeline: initial deadline plus recurring annual requirement","No defined terms section, no cross-references to other legislation, no conditional exceptions","Extremely short document (approximately 150 words of substantive content)"],"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 Baron aeroplanes.\n\n**What it does:**\n- Requires owners and operators of certain Beechcraft 55, 58 and 95-55 series aircraft to inspect or replace **Goodyear BTC-39 fuel cells** (the rubber bladders inside the fuel tanks that hold aviation fuel).\n- The work must follow **Beechcraft Service Instruction No. 0895** — a technical bulletin from the manufacturer detailing exactly what needs to be done.\n\n**Who it affects:**\n- Owners and operators of specific Beechcraft Baron models with particular serial numbers, **only if** their aircraft are fitted with Goodyear BTC-39 fuel cells.\n- This covers various sub-models including the 95-A55, 95-B55, 95-C55, D55, E55, and 58 series, but only within specific serial number ranges.\n\n**When it must be done:**\n- **First time:** Within 100 hours of flying time after 30 June 1978.\n- **Ongoing:** Repeated at least once every 12 months thereafter.\n\n**Why it matters:**\nFuel cells can degrade, leak, or fail over time. A leaking fuel cell in an aircraft is a serious fire and explosion risk. This directive ensures these specific fuel cells are regularly checked to prevent catastrophic failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-55-54-goodyear-fuel-cells","history":"/api/acts/ad-beech-55-54-goodyear-fuel-cells/history","analysis":"/api/acts/ad-beech-55-54-goodyear-fuel-cells/analysis","conflicts":"/api/acts/ad-beech-55-54-goodyear-fuel-cells/conflicts","importantCases":"/api/acts/ad-beech-55-54-goodyear-fuel-cells/important-cases","documents":"/api/acts/ad-beech-55-54-goodyear-fuel-cells/documents"}}