{"id":"F2006B03794","name":"AD/BEECH 33/27 - Goodyear Fuel Cells","slug":"ad-beech-33-27-goodyear-fuel-cells","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43390,"registerId":"commonwealth-F2006B03794-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 33/27 - 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 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 33/27 Goodyear Fuel Cells 6/78\n\nApplicability: Models: 35-B33, 35-C33, E33 and F33 with S/Nos. CD-588 to CD-1304; 35-C33A, E33A and F33A with S/Nos. CE-1 to CE-235, CE-249, CE-250, CE-256, CE-260,\n\nCE-264 to CE-268 and CE-271 to CE-464; E33C and F33C with S/Nos. CJ-1 to CJ- 38; 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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The text of this document is a single airworthiness directive that prescribes mandatory action for a defined set of aircraft and fuel cells. The AD does not indicate any amendment to or narrowing/widening of regulatory scope beyond its stated applicability and requirements, nor does it reference modification of earlier directives within the text provided."},"complexity_factors":["Narrow, technical applicability defined by specific models and serial number ranges (Applicability).","Mandatory action is defined by reference to an external document (Beechcraft SI No. 0895) rather than detailed in the AD itself (Requirement).","Fixed and recurring compliance timing (initial: within 100 hours after 30 June 1978; ongoing: every 12 months) creates operational scheduling obligations (Compliance).","Regulatory provenance: this is an airworthiness directive issued under the Civil Aviation Regulations framework (Part 39 - 105), which ties manufacturer technical instructions to regulatory enforcement (header + Requirement)."],"plain_english_summary":"This airworthiness directive makes Beechcraft Service Instruction No. 0895 mandatory for specified Beechcraft 33/35‑33 series aircraft fitted with Goodyear BTC‑39 fuel cells. Affected owners/operators must have the SI’s inspection/maintenance actions done within 100 hours TIS after 30 June 1978 and then at intervals not exceeding 12 months. Maintenance organisations must perform and certify the work; operators bear the recurring cost and scheduling burden."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific known defect in specific aircraft. It has not expanded beyond its original purpose of addressing Goodyear BTC-39 fuel cell integrity in the identified Beechcraft models."},"complexity_factors":["Single, specific applicability clause limited to defined aircraft models and serial number ranges","One clear compliance action (follow manufacturer's Service Instruction 0895)","Simple temporal compliance structure (initial deadline + recurring 12-month interval)","No defined terms section, no cross-references to other legislation, no conditional exceptions","Total length: approximately 150 words"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **Beechcraft Bonanza and Debonair aircraft** (models 33 and 35-33 series) built between certain serial numbers.\n\n**What it does:**\n- Requires owners/operators 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\n\n**Who it affects:**\n- Owners and operators of the listed Beechcraft models with the affected Goodyear fuel cells\n- Maintenance organisations servicing these aircraft\n\n**Why it matters:**\nFuel cells can degrade, leak, or fail over time. A leaking fuel cell in flight is a serious fire and explosion risk. This AD mandates regular checks to catch problems before they become catastrophic.\n\n**When to comply:**\n- First inspection: within **100 flight hours** after 30 June 1978\n- Then **every 12 months** thereafter\n\nThis is a **recurring airworthiness requirement** — not a one-off fix, but ongoing maintenance to keep the aircraft safe to fly."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-33-27-goodyear-fuel-cells","history":"/api/acts/ad-beech-33-27-goodyear-fuel-cells/history","analysis":"/api/acts/ad-beech-33-27-goodyear-fuel-cells/analysis","conflicts":"/api/acts/ad-beech-33-27-goodyear-fuel-cells/conflicts","importantCases":"/api/acts/ad-beech-33-27-goodyear-fuel-cells/important-cases","documents":"/api/acts/ad-beech-33-27-goodyear-fuel-cells/documents"}}