{"id":"F2006B08262","name":"AD/CESSNA 340/16 - Goodyear Fuel Cells - Inspection","slug":"ad-cessna-340-16-goodyear-fuel-cells-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115569,"registerId":"commonwealth-F2006B08262-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 340/16 - 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 340 Series Aeroplanes\n\n \n\nAD/CESSNA 340/16 Goodyear Fuel Cells - Inspection 6/78\n\nApplicability: All models 340 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":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The Directive as supplied is narrowly scoped to Cessna 340 aircraft fitted with Goodyear BTC-39 fuel cells and prescribes inspection timing and reliance on Cessna Service Letter ME78-7. Nothing in the text indicates an expansion or narrowing of that scope from the instrument's stated applicability."},"complexity_factors":["Narrow technical scope: applies only to Cessna 340 models fitted with Goodyear BTC-39 fuel cells (Applicability).","Single, clear compliance schedule: initial inspection within 100 hours TIS after 30 June 1978 and annual thereafter (Compliance).","Dependency on an external technical document (Cessna SL No. ME78-7) for inspection procedure increases operational steps and creates reliance on that document (Document).","Requires accurate maintenance records and time-in-service tracking to meet the 100-hour window and annual recurrence (Compliance).","Identification burden: operators must determine whether an aircraft is fitted with the specified part-numbered fuel cell (Applicability).","Enforcement and technical decisions split between regulator (Directive) and manufacturer service instructions (Document), requiring coordination between regulator, operator and maintenance personnel."],"plain_english_summary":"This Airworthiness Directive requires Cessna 340s fitted with Goodyear BTC-39 fuel cells to be inspected per Cessna Service Letter No. ME78‑7: an initial check within 100 hours TIS after 30 June 1978 and then annually. It affects aircraft owners/operators (who bear inspection, repair and downtime costs) and is issued and enforced by the Civil Aviation Safety Authority."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive from 1978. It has not expanded beyond its original narrow purpose of inspecting specific fuel cells on specific aircraft."},"complexity_factors":["Very short document (under 200 words)","Only 4 operative provisions: applicability, reference document, compliance deadline, and repeat interval","No defined terms section","No cross-references to other legislation beyond the enabling regulations (Part 39)","Single condition: aircraft model + specific fuel cell type","No exceptions, exemptions, or conditional logic"],"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) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires owners and operators of **Cessna 340 series aircraft** to inspect the **Goodyear BTC-39 fuel cells** (the rubber bladders inside the fuel tanks) for defects.\n\n**Who must comply:** Anyone operating a Cessna 340 model fitted with these specific Goodyear 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 year thereafter\n- **How:** Following the procedures in **Cessna Service Letter No. ME78-7**\n\n**Why it matters:** Fuel cell failures can cause fuel leaks, which create fire hazards and can lead to engine failure. This AD was issued to catch potential defects before they cause accidents.\n\n**Key point:** This is not optional. \"Compliance\" means you must do this or the aircraft is not legally airworthy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-340-16-goodyear-fuel-cells-inspection","history":"/api/acts/ad-cessna-340-16-goodyear-fuel-cells-inspection/history","analysis":"/api/acts/ad-cessna-340-16-goodyear-fuel-cells-inspection/analysis","conflicts":"/api/acts/ad-cessna-340-16-goodyear-fuel-cells-inspection/conflicts","importantCases":"/api/acts/ad-cessna-340-16-goodyear-fuel-cells-inspection/important-cases","documents":"/api/acts/ad-cessna-340-16-goodyear-fuel-cells-inspection/documents"}}