{"id":"F2006B05067","name":"AD/CESSNA 180/54 - Fuel Vent Tube","slug":"ad-cessna-180-54-fuel-vent-tube","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44977,"registerId":"commonwealth-F2006B05067-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 180/54 - Fuel Vent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 180, 182 and Wren 460 Series Aeroplanes\n\n \n\nAD/CESSNA 180/54 Fuel Vent Tube 9/78\n\nApplicability: Model 180 with S/Nos. 18052771 to 18052939. Models 182 and R182 with S/Nos.\n\n18265176 to 18266199 and R1820001 to R1820099.\n\n \n\nRequirement: 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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2338},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original purpose: correcting a specific airworthiness issue (fuel vent tube defects) in defined aircraft models. There is no evidence of scope expansion beyond this technical safety fix."},"complexity_factors":["Ultra-short form (approximately 50 words of operative text)","Single, specific mechanical component identified (fuel vent tube)","Limited to precise aircraft serial number ranges","No legislative cross-references (only references manufacturer service letter)","No exceptions, exemptions, or conditional provisions","Binary compliance requirement (comply with external standard)"],"plain_english_summary":"This Airworthiness Directive mandates urgent safety action for specific Cessna aircraft models to prevent fuel system failures.\n\n**Who it affects**\nOwners and operators of:\n- Cessna 180 aircraft (serial numbers 18052771 through 18052939)\n- Cessna 182 and R182 aircraft (serial numbers 18265176 to 18266199 and R1820001 to R1820099)\n\n**What it requires**\nYou must inspect and rectify issues with the **fuel vent tube** — the pipe that lets air into the fuel tank to replace used fuel — following the manufacturer's technical instructions (Cessna Service Letter SE78-40).\n\n**Compliance deadline**\nThe work must be completed within 100 hours of flight time after 30 September 1978.\n\n**Safety purpose**\nThis prevents fuel leaks that could cause engine failure or fire."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-180-54-fuel-vent-tube","history":"/api/acts/ad-cessna-180-54-fuel-vent-tube/history","analysis":"/api/acts/ad-cessna-180-54-fuel-vent-tube/analysis","conflicts":"/api/acts/ad-cessna-180-54-fuel-vent-tube/conflicts","importantCases":"/api/acts/ad-cessna-180-54-fuel-vent-tube/important-cases","documents":"/api/acts/ad-cessna-180-54-fuel-vent-tube/documents"}}