{"id":"F2006B03575","name":"AD/BEA 121/11 - Fuel Tanks","slug":"ad-bea-121-11-fuel-tanks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43142,"registerId":"commonwealth-F2006B03575-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEA 121/11 - Fuel Tanks","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)  Beagle B121 (Pup) Series Aeroplanes\n\n \n\nAD/BEA 121/11 Fuel Tanks 4/72\n\nApplicability: All models.\n\n \n\nRequirement: Action in accordance with Beagle SB No. B121/22. Compliance:  Within 200 hours time in service after 28 April 1972.\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":1609},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope, applying only to fuel tank maintenance for Beagle B121 (Pup) aircraft as originally specified."},"complexity_factors":["Single operative requirement with no subsections","No interpretation section or defined terms","No cross-references to other legislative instruments","No conditional exceptions or nested provisions","Direct, unambiguous compliance deadline"],"plain_english_summary":"**What this requires**\nThis directive mandates safety work on the fuel tanks of Beagle B121 (Pup) aeroplanes.\n\n**Who it affects**\nOwners and operators of all models of Beagle B121 (Pup) series aircraft.\n\n**What must be done**\nYou must perform maintenance actions on the fuel tanks following the manufacturer's instructions in **Beagle Service Bulletin No. B121/22**.\n\n**When it must be done**\nThe work must be completed within **200 hours of flight time** accumulated after **28 April 1972**.\n\n**Why it matters**\nThis is a mandatory airworthiness requirement designed to address specific safety risks with the fuel tank design in these aircraft. Compliance is legally enforceable under Part 39 of the Civil Aviation Regulations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bea-121-11-fuel-tanks","history":"/api/acts/ad-bea-121-11-fuel-tanks/history","analysis":"/api/acts/ad-bea-121-11-fuel-tanks/analysis","conflicts":"/api/acts/ad-bea-121-11-fuel-tanks/conflicts","importantCases":"/api/acts/ad-bea-121-11-fuel-tanks/important-cases","documents":"/api/acts/ad-bea-121-11-fuel-tanks/documents"}}