{"id":"F2006B08207","name":"AD/CESSNA 320/28 - Goodyear Fuel Cells - Inspection","slug":"ad-cessna-320-28-goodyear-fuel-cells-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115427,"registerId":"commonwealth-F2006B08207-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 320/28 - 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)  Cessna 320 Series Aeroplanes\n\n \n\nAD/CESSNA 320/28 Goodyear Fuel Cells - Inspection 6/78\n\nApplicability: All models 320 fitted with Goodyear BTC-39 fuel cells. Document:  Cessna SL No. ME78-7.\n\nCompliance: Within 100 hours time in service after 30 June 1978 and annually thereafter as detailed in Cessna SL No. ME78-7.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive issued in 1978. It has not expanded beyond its original purpose of mandating fuel cell inspections for a specific aircraft model and component type."},"complexity_factors":["Extremely short document (under 150 words)","Only 4 operative provisions: applicability, document reference, compliance deadline, and recurring requirement","No defined terms section — all terms are industry standard or explicitly named (Cessna 320, Goodyear BTC-39)","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Simple temporal trigger (100 hours time in service after fixed date) with annual recurrence","Single condition: aircraft must be 'fitted with' specific fuel cells"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it as a compulsory recall notice, but for aircraft maintenance.\n\n**What it requires:** Owners and operators of **Cessna 320 series aeroplanes** must inspect the **Goodyear BTC-39 fuel cells** (the rubber bladders inside the fuel tanks) within **100 hours of flying time** after 30 June 1978, and then **repeat this inspection every year**.\n\n**Who must follow this:** Anyone operating a Cessna 320 model aircraft fitted with these specific Goodyear fuel cells.\n\n**Why it matters:** Fuel cells can degrade, leak, or fail over time. A leaking fuel cell creates fire and explosion risks. This directive forces operators to check for defects before they become catastrophic.\n\n**How to comply:** Follow the detailed inspection procedures in **Cessna Service Letter No. ME78-7** (referenced but not reproduced here)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive’s scope, as stated in the text provided, is limited to all Cessna 320 models fitted with Goodyear BTC-39 fuel cells and prescribes a specific initial and recurring inspection timetable (Applicability; Compliance). There is no indication in this instrument that the applicability or inspection intervals have been expanded or narrowed from the stated content; the directive relies on the referenced Cessna service letter for procedural detail (Document)."},"complexity_factors":["Narrow and specific applicability (limited to Cessna 320 aircraft fitted with Goodyear BTC-39 fuel cells) (Applicability)","Simple, fixed compliance timetable (initial within 100 hours TIS after 30 June 1978, then annually) (Compliance)","Delegation of procedural detail to an external document (Cessna Service Letter ME78-7), increasing operational dependency on that document (Document)","Absence in the directive text of explicit enforcement, recordkeeping or penalty provisions, requiring reference to broader regulatory framework for those elements (Compliance)","Potential logistical burden for operators to obtain and implement the service letter procedures and to schedule inspections without detailed steps in the AD (Document)"],"plain_english_summary":"This directive requires inspections of Goodyear BTC-39 fuel cells installed in Cessna 320 series aeroplanes, with an initial check within 100 hours TIS after 30 June 1978 and recurring inspections per Cessna Service Letter ME78-7. \n\nIt affects owners, operators and maintenance organisations; it preserves airworthiness but imposes inspection and repair costs and relies on the service letter for detailed procedures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-320-28-goodyear-fuel-cells-inspection","history":"/api/acts/ad-cessna-320-28-goodyear-fuel-cells-inspection/history","analysis":"/api/acts/ad-cessna-320-28-goodyear-fuel-cells-inspection/analysis","conflicts":"/api/acts/ad-cessna-320-28-goodyear-fuel-cells-inspection/conflicts","importantCases":"/api/acts/ad-cessna-320-28-goodyear-fuel-cells-inspection/important-cases","documents":"/api/acts/ad-cessna-320-28-goodyear-fuel-cells-inspection/documents"}}