{"id":"F2006B04239","name":"AD/BEECH 90/50 - Goodyear Fuel Cells - Inspection","slug":"ad-beech-90-50-goodyear-fuel-cells-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44004,"registerId":"commonwealth-F2006B04239-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/50 - Goodyear Fuel Cells - Inspection","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 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/50 Goodyear Fuel Cells - Inspection 6/78\n\nApplicability: Models 65-90, 65-A90, B90 and C90 with S/Nos. LJ-1 to LJ-608; E90 with S/Nos.\n\nLW-1 to LW-73, fitted with Goodyear BTC-39 fuel cells.\n\n \n\nDocument: 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\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive’s scope is limited to the specified aircraft models and serial number ranges and prescribes inspection timing and the service instruction to be used. The instrument, as presented, imposes inspection requirements consistent with its stated purpose and does not, on its face, expand or narrow that scope beyond the identified applicability and compliance provisions (Applicability; Document; Compliance)."},"complexity_factors":["Narrow and specific applicability: only certain Beechcraft models and defined serial number ranges (Applicability).","Clear, simple compliance timing: initial window tied to a fixed date and flight hours, then annual recurrence (Compliance).","Dependency on an external technical document (Beechcraft SI No. 0895) for the inspection procedure increases operational dependence on that document (Document).","Practical implementation issues (availability of qualified maintenance, parts, and potential aircraft downtime) add operational complexity despite the directive’s textual simplicity (Compliance).","Historic date reference (initial compliance tied to 30 June 1978) may affect interpretation in archival or legacy-maintenance contexts (Compliance)."],"plain_english_summary":"What this directive does (mechanically)\n\n- Requires mandatory inspection of Goodyear BTC-39 fuel cells fitted to certain Beechcraft 65-90/B90/C90 and E90 aeroplanes listed by serial number. (Applicability)\n- Directs that the inspection be carried out in accordance with Beechcraft Service Instruction No. 0895. (Document)\n- Sets the timing: an initial inspection must be completed within 100 hours’ time in service after 30 June 1978, and thereafter inspections must be repeated at intervals not exceeding 12 months. (Compliance)\n\nWho this affects\n\n- Owners and operators of the specified Beechcraft models with the listed serial number ranges (LJ-1 to LJ-608 for models 65-90, 65-A90, B90, C90; LW-1 to LW-73 for E90). (Applicability)\n- Maintenance organisations or personnel who carry out inspections and any necessary corrective work under the referenced Beechcraft Service Instruction. (Document)\n\nWho pays, who decides, and what changes in behaviour\n\n- Owners/operators pay for inspections, any follow-up maintenance, parts and associated aircraft downtime. (Compliance; Applicability)\n- The Civil Aviation Safety Authority issues and enforces the directive under the Civil Aviation Regulations framework (header). The inspection procedure is set out by Beechcraft in Service Instruction No. 0895, which operators must follow. (Document)\n- Operators must schedule the initial inspection within the stated window and then ensure recurring annual inspections; they must also retain evidence of compliance as required by normal airworthiness practice. (Compliance)\n\nPurpose claims and trade-offs (stated and practical implications)\n\n- The directive’s stated purpose is to ensure the airworthiness of aircraft fitted with the specified fuel cell type by mandating inspection. The instrument achieves that mechanically by (a) identifying affected aircraft, (b) prescribing an inspection procedure (Beechcraft SI No. 0895), and (c) setting a fixed initial and recurring inspection schedule. (Applicability; Document; Compliance)\n- Costs and incentives: owners/operators incur direct inspection and repair costs and indirect costs from aircraft downtime. These recurring costs create an incentive either to comply on schedule or, where practicable, to limit use or replace affected components to reduce inspection frequency. (Compliance; Applicability)\n- Compliance burden and implementation risk: the directive depends on the availability of qualified maintenance resources, parts and access to the fuel cell. If parts or qualified labour are scarce, operators may experience longer grounding times or higher costs. The directive refers to an external service instruction for the technical procedure, so correct implementation depends on that document being available and followed. (Document; Compliance)\n- Bureaucratic discretion: the directive itself prescribes fixed requirements (who, what, when). Enforcement and any further action (such as exemptions, approvals for alternative procedures, or escalations for non-compliance) lie with the regulator under the Civil Aviation Regulations framework. (header; Compliance)\n\nOther operational effects to note\n\n- Recordkeeping and scheduling practices will change to ensure inspections occur within the stated time windows. (Compliance)\n- Operators may choose different technical responses (inspection and repair, replacement of the fuel cell, or operational restrictions) depending on cost and availability of parts and labour. (Applicability; Document)\n\nCitations\n\n- Applicability: lists affected models and serial numbers.\n- Document: identifies Beechcraft Service Instruction No. 0895 as the inspection procedure.\n- Compliance: initial inspection within 100 hours’ time in service after 30 June 1978 and recurring inspections at intervals not exceeding 12 months."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused specifically on fuel cell inspections for a narrow subset of aircraft. It has not expanded beyond its original purpose of addressing a known airworthiness concern with Goodyear BTC-39 fuel cells in specific Beechcraft King Air models."},"complexity_factors":["Very short document (under 200 words)","Only 4 defined applicability criteria (aircraft models, serial number ranges, fuel cell type)","Single compliance requirement with clear time trigger (100 hours) and recurring interval (12 months)","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","No conditional logic, exceptions, or nested provisions","References only one external technical document (Beechcraft Service Instruction No. 0895)"],"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 aircraft.\n\n**What it does:**\nRequires owners and operators of certain Beechcraft King Air aeroplanes to inspect their Goodyear fuel cells (the rubber bladders inside fuel tanks that hold aviation fuel) according to Beechcraft's Service Instruction No. 0895.\n\n**Who it affects:**\n- Beechcraft Model 65-90, 65-A90, B90, and C90 King Airs with serial numbers LJ-1 through LJ-608\n- Model E90 King Airs with serial numbers LW-1 through LW-73\n- **Only if** these aircraft are fitted with Goodyear BTC-39 fuel cells\n\n**What must be done:**\n- First inspection: Within 100 hours of flying time after 30 June 1978\n- Repeat inspections: 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 potential defects are caught before they cause accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-50-goodyear-fuel-cells-inspection","history":"/api/acts/ad-beech-90-50-goodyear-fuel-cells-inspection/history","analysis":"/api/acts/ad-beech-90-50-goodyear-fuel-cells-inspection/analysis","conflicts":"/api/acts/ad-beech-90-50-goodyear-fuel-cells-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-50-goodyear-fuel-cells-inspection/important-cases","documents":"/api/acts/ad-beech-90-50-goodyear-fuel-cells-inspection/documents"}}