{"id":"F2006B05276","name":"AD/CESSNA 207/17 - Fuel Vent Tube","slug":"ad-cessna-207-17-fuel-vent-tube","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45650,"registerId":"commonwealth-F2006B05276-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 207/17 - Fuel Vent Tube","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 207 Series Aeroplanes\n\n \n\nAD/CESSNA 207/17 Fuel Vent Tube 9/78\n\nApplicability: Model 207 with S/Nos 20700363 to 20700416. Requirement:  Action in accordance with Cessna SL No SE78-40. Compliance:               Within 100 hours time in service after 30 September 1978.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1440},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive retains its original narrow technical scope addressing a specific safety defect in fuel vent tubes on particular Cessna 207 aircraft. It has not expanded beyond this targeted maintenance requirement."},"complexity_factors":["Single, unambiguous maintenance action required","No defined terms or interpretation section","Precise applicability limited to specific aircraft serial numbers","Simple compliance calculation (100 hours after fixed date)","No exceptions, exemptions, or conditional provisions"],"plain_english_summary":"**What this does:**\nThis is a mandatory safety instruction (called an **Airworthiness Directive**) requiring specific maintenance work on the fuel vent tubes of certain Cessna 207 aircraft.\n\n**Who it affects:**\nOwners and operators of Cessna Model 207 aeroplanes with serial numbers **20700363 through 20700416**.\n\n**What must be done:**\nThe fuel vent tube must be inspected or repaired according to the manufacturer's instructions in **Cessna Service Letter No. SE78-40**. The fuel vent tube is a small pipe that lets air into the fuel tank as fuel is consumed; if it fails, dangerous pressure can build up or fuel flow can be disrupted.\n\n**When:**\nThe work must be completed within **100 hours of flight time** after 30 September 1978.\n\n**Why it matters:**\nThis prevents potential fuel starvation or leakage that could cause engine failure during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-207-17-fuel-vent-tube","history":"/api/acts/ad-cessna-207-17-fuel-vent-tube/history","analysis":"/api/acts/ad-cessna-207-17-fuel-vent-tube/analysis","conflicts":"/api/acts/ad-cessna-207-17-fuel-vent-tube/conflicts","importantCases":"/api/acts/ad-cessna-207-17-fuel-vent-tube/important-cases","documents":"/api/acts/ad-cessna-207-17-fuel-vent-tube/documents"}}