{"id":"F2006B09067","name":"AD/DHC-3/19 - Fuel Line Chafing","slug":"ad-dhc-3-19-fuel-line-chafing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52827,"registerId":"commonwealth-F2006B09067-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-3/19 - Fuel Line Chafing","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)  DHC-3 (Otter) Series Aeroplanes\n\n \n\nAD/DHC-3/19 Fuel Line Chafing NK\n\nApplicability: All models prior to S/Nos 379.\n\n \n\nRequirement: Action in accordance with De H Canada EB “O” No 67. Compliance:  Forthwith.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1687},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive targets a specific mechanical safety issue (fuel line chafing) for a defined aircraft type and serial number range. There is no indication of scope expansion beyond the original airworthiness safety purpose."},"complexity_factors":["Single sentence operational requirement","No definitions section or interpretation clauses","No conditional logic, exceptions, or nested provisions","Only one external document reference (manufacturer's bulletin)"],"plain_english_summary":"**What this does:** This safety order (called an Airworthiness Directive) requires owners of specific De Havilland Canada DHC-3 Otter aircraft to fix a potentially dangerous fuel line problem **immediately**.\n\n**Who is affected:** Anyone operating DHC-3 Otter aeroplanes with serial numbers below 379.\n\n**The problem:** \"Fuel line chafing\" means the fuel pipes are rubbing against other parts of the aircraft and wearing down, which could cause fuel leaks or fires.\n\n**What must be done:** Operators must follow the repair instructions in De Havilland Canada Engineering Bulletin \"O\" No 67 straight away (the directive uses the term \"forthwith,\" which means immediately)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-3-19-fuel-line-chafing","history":"/api/acts/ad-dhc-3-19-fuel-line-chafing/history","analysis":"/api/acts/ad-dhc-3-19-fuel-line-chafing/analysis","conflicts":"/api/acts/ad-dhc-3-19-fuel-line-chafing/conflicts","importantCases":"/api/acts/ad-dhc-3-19-fuel-line-chafing/important-cases","documents":"/api/acts/ad-dhc-3-19-fuel-line-chafing/documents"}}